Acta Prataculturae Sinica ›› 2022, Vol. 31 ›› Issue (10): 178-188.DOI: 10.11686/cyxb2021402
Dong-sheng GUO1(), Shao-xun TANG2()
Received:
2021-11-08
Revised:
2021-12-20
Online:
2022-10-20
Published:
2022-09-14
Contact:
Shao-xun TANG
Dong-sheng GUO, Shao-xun TANG. In vivo degradation characteristics of dry matter and crude protein of four morphological fractions for five varieties maize harvested at two maturity stages[J]. Acta Prataculturae Sinica, 2022, 31(10): 178-188.
品种 Variety | 形态学部位 Morphological fraction | 成熟期 Maturity stage | 化学成分Chemical composition (g·kg-1 DM) | ||||
---|---|---|---|---|---|---|---|
OM | CP | P | NDF | ADF | |||
普通玉米 Common corn | 叶片Leaf blade | 乳熟期Milk stage | 880 | 178 | 2.66 | 563 | 338 |
蜡熟期Dough stage | 867 | 156 | 2.85 | 552 | 355 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 896 | 58 | 1.44 | 637 | 397 | |
蜡熟期Dough stage | 902 | 50 | 1.36 | 631 | 377 | ||
茎秆Stem | 乳熟期Milk stage | 947 | 61 | 1.82 | 559 | 370 | |
蜡熟期Dough stage | 938 | 53 | 1.35 | 539 | 365 | ||
苞叶Husk | 乳熟期Milk stage | 958 | 56 | 2.28 | 630 | 316 | |
蜡熟期Dough stage | 964 | 50 | 1.99 | 662 | 345 | ||
青贮玉米 Silage corn | 叶片Leaf blade | 乳熟期Milk stage | 866 | 190 | 2.77 | 559 | 350 |
蜡熟期Dough stage | 879 | 165 | 2.50 | 559 | 351 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 890 | 75 | 2.04 | 638 | 412 | |
蜡熟期Dough stage | 907 | 57 | 2.07 | 576 | 355 | ||
茎秆Stem | 乳熟期Milk stage | 936 | 78 | 1.90 | 595 | 431 | |
蜡熟期Dough stage | 954 | 70 | 1.60 | 539 | 354 | ||
苞叶Husk | 乳熟期Milk stage | 967 | 58 | 2.43 | 588 | 303 | |
蜡熟期Dough stage | 969 | 53 | 2.66 | 615 | 297 | ||
高油玉米 High oil corn | 叶片Leaf blade | 乳熟期Milk stage | 891 | 192 | 2.97 | 521 | 303 |
蜡熟期Dough stage | 884 | 166 | 2.73 | 524 | 332 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 903 | 66 | 1.65 | 594 | 368 | |
蜡熟期Dough stage | 904 | 47 | 1.16 | 601 | 355 | ||
茎秆Stem | 乳熟期Milk stage | 945 | 61 | 1.85 | 581 | 382 | |
蜡熟期Dough stage | 957 | 49 | 1.29 | 562 | 380 | ||
苞叶Husk | 乳熟期Milk stage | 965 | 59 | 2.53 | 607 | 311 | |
蜡熟期Dough stage | 958 | 47 | 1.80 | 663 | 353 | ||
甜玉米 Sweet corn | 叶片Leaf blade | 乳熟期Milk stage | 867 | 185 | 2.73 | 534 | 318 |
蜡熟期Dough stage | 859 | 165 | 2.17 | 551 | 340 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 888 | 63 | 1.65 | 608 | 363 | |
蜡熟期Dough stage | 896 | 59 | 1.40 | 651 | 379 | ||
茎秆Stem | 乳熟期Milk stage | 944 | 78 | 1.94 | 564 | 371 | |
蜡熟期Dough stage | 948 | 73 | 1.55 | 553 | 372 | ||
苞叶Husk | 乳熟期Milk stage | 962 | 66 | 2.52 | 560 | 291 | |
蜡熟期Dough stage | 961 | 56 | 2.21 | 645 | 332 | ||
糯玉米 Waxy corn | 叶片Leaf blade | 乳熟期Milk stage | 876 | 187 | 2.87 | 546 | 314 |
蜡熟期Dough stage | 857 | 160 | 2.57 | 554 | 339 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 904 | 67 | 1.18 | 618 | 368 | |
蜡熟期Dough stage | 904 | 55 | 1.15 | 635 | 356 | ||
茎秆Stem | 乳熟期Milk stage | 950 | 77 | 1.34 | 564 | 360 | |
蜡熟期Dough stage | 959 | 62 | 1.21 | 523 | 331 | ||
苞叶Husk | 乳熟期Milk stage | 963 | 64 | 2.12 | 599 | 289 | |
蜡熟期Dough stage | 961 | 50 | 1.50 | 682 | 322 |
Table 1 Chemical composition of morphological fractions for five variety corn stalk harvested at two maturity stages[13]
品种 Variety | 形态学部位 Morphological fraction | 成熟期 Maturity stage | 化学成分Chemical composition (g·kg-1 DM) | ||||
---|---|---|---|---|---|---|---|
OM | CP | P | NDF | ADF | |||
普通玉米 Common corn | 叶片Leaf blade | 乳熟期Milk stage | 880 | 178 | 2.66 | 563 | 338 |
蜡熟期Dough stage | 867 | 156 | 2.85 | 552 | 355 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 896 | 58 | 1.44 | 637 | 397 | |
蜡熟期Dough stage | 902 | 50 | 1.36 | 631 | 377 | ||
茎秆Stem | 乳熟期Milk stage | 947 | 61 | 1.82 | 559 | 370 | |
蜡熟期Dough stage | 938 | 53 | 1.35 | 539 | 365 | ||
苞叶Husk | 乳熟期Milk stage | 958 | 56 | 2.28 | 630 | 316 | |
蜡熟期Dough stage | 964 | 50 | 1.99 | 662 | 345 | ||
青贮玉米 Silage corn | 叶片Leaf blade | 乳熟期Milk stage | 866 | 190 | 2.77 | 559 | 350 |
蜡熟期Dough stage | 879 | 165 | 2.50 | 559 | 351 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 890 | 75 | 2.04 | 638 | 412 | |
蜡熟期Dough stage | 907 | 57 | 2.07 | 576 | 355 | ||
茎秆Stem | 乳熟期Milk stage | 936 | 78 | 1.90 | 595 | 431 | |
蜡熟期Dough stage | 954 | 70 | 1.60 | 539 | 354 | ||
苞叶Husk | 乳熟期Milk stage | 967 | 58 | 2.43 | 588 | 303 | |
蜡熟期Dough stage | 969 | 53 | 2.66 | 615 | 297 | ||
高油玉米 High oil corn | 叶片Leaf blade | 乳熟期Milk stage | 891 | 192 | 2.97 | 521 | 303 |
蜡熟期Dough stage | 884 | 166 | 2.73 | 524 | 332 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 903 | 66 | 1.65 | 594 | 368 | |
蜡熟期Dough stage | 904 | 47 | 1.16 | 601 | 355 | ||
茎秆Stem | 乳熟期Milk stage | 945 | 61 | 1.85 | 581 | 382 | |
蜡熟期Dough stage | 957 | 49 | 1.29 | 562 | 380 | ||
苞叶Husk | 乳熟期Milk stage | 965 | 59 | 2.53 | 607 | 311 | |
蜡熟期Dough stage | 958 | 47 | 1.80 | 663 | 353 | ||
甜玉米 Sweet corn | 叶片Leaf blade | 乳熟期Milk stage | 867 | 185 | 2.73 | 534 | 318 |
蜡熟期Dough stage | 859 | 165 | 2.17 | 551 | 340 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 888 | 63 | 1.65 | 608 | 363 | |
蜡熟期Dough stage | 896 | 59 | 1.40 | 651 | 379 | ||
茎秆Stem | 乳熟期Milk stage | 944 | 78 | 1.94 | 564 | 371 | |
蜡熟期Dough stage | 948 | 73 | 1.55 | 553 | 372 | ||
苞叶Husk | 乳熟期Milk stage | 962 | 66 | 2.52 | 560 | 291 | |
蜡熟期Dough stage | 961 | 56 | 2.21 | 645 | 332 | ||
糯玉米 Waxy corn | 叶片Leaf blade | 乳熟期Milk stage | 876 | 187 | 2.87 | 546 | 314 |
蜡熟期Dough stage | 857 | 160 | 2.57 | 554 | 339 | ||
叶鞘Leaf sheath | 乳熟期Milk stage | 904 | 67 | 1.18 | 618 | 368 | |
蜡熟期Dough stage | 904 | 55 | 1.15 | 635 | 356 | ||
茎秆Stem | 乳熟期Milk stage | 950 | 77 | 1.34 | 564 | 360 | |
蜡熟期Dough stage | 959 | 62 | 1.21 | 523 | 331 | ||
苞叶Husk | 乳熟期Milk stage | 963 | 64 | 2.12 | 599 | 289 | |
蜡熟期Dough stage | 961 | 50 | 1.50 | 682 | 322 |
成熟期 Mature stage | 品种 Variety | 叶片Leaf blade | 叶鞘 Leaf sheath | ||||||
---|---|---|---|---|---|---|---|---|---|
aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) | aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) | ||
乳熟期 Milk stage | 糯玉米Waxy corn | 28.0 | 49.1 | 0.0189 | 52.1 | 32.6 | 43.2 | 0.0193 | 53.1 |
普通玉米Common corn | 25.8 | 49.7 | 0.0150 | 47.2 | 31.7 | 37.1 | 0.0178 | 49.5 | |
青贮玉米Silage corn | 27.2 | 42.4 | 0.0214 | 49.4 | 32.0 | 34.8 | 0.0210 | 49.0 | |
甜玉米Sweet corn | 27.0 | 43.4 | 0.0174 | 47.4 | 36.4 | 33.6 | 0.0233 | 54.4 | |
高油玉米High oil corn | 31.0 | 47.0 | 0.0215 | 55.5 | 35.2 | 31.4 | 0.0242 | 51.8 | |
蜡熟期 Dough stage | 糯玉米Waxy corn | 31.4 | 37.7 | 0.0174 | 48.6 | 36.1 | 24.2 | 0.0185 | 46.4 |
普通玉米Common corn | 29.9 | 48.2 | 0.0170 | 52.2 | 34.0 | 35.3 | 0.0181 | 50.5 | |
青贮玉米Silage corn | 29.9 | 30.9 | 0.0230 | 46.7 | 38.4 | 21.7 | 0.0253 | 51.0 | |
甜玉米Sweet corn | 29.9 | 35.2 | 0.0176 | 46.5 | 34.4 | 34.4 | 0.0199 | 52.0 | |
高油玉米High oil corn | 31.4 | 39.3 | 0.0246 | 51.1 | 36.1 | 25.6 | 0.0272 | 50.6 | |
SEM | 0.94 | 2.65 | 0.0019 | 1.16 | 0.82 | 2.93 | 0.0023 | 1.73 | |
P值 P value | M | *** | *** | NS | NS | *** | *** | NS | NS |
V | ** | *** | *** | *** | ** | * | ** | NS | |
M×V | NS | NS | NS | ** | *** | ** | NS | NS |
Table 2 In vivo dry matter degradation kinetic characteristics of leaf blade and leaf sheath for five variety corn stalk harvested at two maturity stages
成熟期 Mature stage | 品种 Variety | 叶片Leaf blade | 叶鞘 Leaf sheath | ||||||
---|---|---|---|---|---|---|---|---|---|
aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) | aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) | ||
乳熟期 Milk stage | 糯玉米Waxy corn | 28.0 | 49.1 | 0.0189 | 52.1 | 32.6 | 43.2 | 0.0193 | 53.1 |
普通玉米Common corn | 25.8 | 49.7 | 0.0150 | 47.2 | 31.7 | 37.1 | 0.0178 | 49.5 | |
青贮玉米Silage corn | 27.2 | 42.4 | 0.0214 | 49.4 | 32.0 | 34.8 | 0.0210 | 49.0 | |
甜玉米Sweet corn | 27.0 | 43.4 | 0.0174 | 47.4 | 36.4 | 33.6 | 0.0233 | 54.4 | |
高油玉米High oil corn | 31.0 | 47.0 | 0.0215 | 55.5 | 35.2 | 31.4 | 0.0242 | 51.8 | |
蜡熟期 Dough stage | 糯玉米Waxy corn | 31.4 | 37.7 | 0.0174 | 48.6 | 36.1 | 24.2 | 0.0185 | 46.4 |
普通玉米Common corn | 29.9 | 48.2 | 0.0170 | 52.2 | 34.0 | 35.3 | 0.0181 | 50.5 | |
青贮玉米Silage corn | 29.9 | 30.9 | 0.0230 | 46.7 | 38.4 | 21.7 | 0.0253 | 51.0 | |
甜玉米Sweet corn | 29.9 | 35.2 | 0.0176 | 46.5 | 34.4 | 34.4 | 0.0199 | 52.0 | |
高油玉米High oil corn | 31.4 | 39.3 | 0.0246 | 51.1 | 36.1 | 25.6 | 0.0272 | 50.6 | |
SEM | 0.94 | 2.65 | 0.0019 | 1.16 | 0.82 | 2.93 | 0.0023 | 1.73 | |
P值 P value | M | *** | *** | NS | NS | *** | *** | NS | NS |
V | ** | *** | *** | *** | ** | * | ** | NS | |
M×V | NS | NS | NS | ** | *** | ** | NS | NS |
成熟期 Mature stage | 品种 Variety | 茎秆 Stem | 苞叶 Husk | ||||||
---|---|---|---|---|---|---|---|---|---|
aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) | aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) | ||
乳熟期 Milk stage | 糯玉米Waxy corn | 43.6 | 36.1 | 0.0138 | 58.2 | 36.0 | 41.5 | 0.0134 | 52.2 |
普通玉米Common corn | 44.5 | 31.0 | 0.0158 | 56.8 | 32.5 | 36.4 | 0.0209 | 51.0 | |
青贮玉米Silage corn | 37.0 | 28.0 | 0.0169 | 49.4 | 41.0 | 34.9 | 0.0236 | 60.3 | |
甜玉米Sweet corn | 44.2 | 30.9 | 0.0147 | 55.8 | 42.4 | 33.7 | 0.0229 | 59.5 | |
高油玉米High oil corn | 40.2 | 22.3 | 0.0276 | 52.9 | 40.3 | 32.9 | 0.0196 | 56.7 | |
蜡熟期 Dough stage | 糯玉米Waxy corn | 46.4 | 28.5 | 0.0144 | 58.0 | 29.6 | 32.5 | 0.0203 | 45.7 |
普通玉米Common corn | 45.0 | 16.1 | 0.0230 | 53.7 | 32.4 | 33.8 | 0.0189 | 48.4 | |
青贮玉米Silage corn | 47.6 | 25.4 | 0.0316 | 59.4 | 37.6 | 32.8 | 0.0313 | 54.8 | |
甜玉米Sweet corn | 40.3 | 29.9 | 0.0162 | 53.0 | 34.0 | 28.8 | 0.0162 | 47.1 | |
高油玉米High oil corn | 44.6 | 19.7 | 0.0164 | 53.5 | 32.8 | 33.1 | 0.0191 | 48.6 | |
SEM | 0.82 | 2.82 | 0.0045 | 1.04 | 1.16 | 3.19 | 0.0027 | 2.43 | |
P值 P value | M | *** | *** | NS | NS | *** | NS | NS | *** |
V | *** | *** | NS | *** | *** | NS | ** | ** | |
M×V | *** | NS | NS | *** | ** | NS | * | NS |
Table 3 In vivo dry matter degradation kinetic characteristics of stem and husk for five variety corn stalk harvested at two maturity stages
成熟期 Mature stage | 品种 Variety | 茎秆 Stem | 苞叶 Husk | ||||||
---|---|---|---|---|---|---|---|---|---|
aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) | aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) | ||
乳熟期 Milk stage | 糯玉米Waxy corn | 43.6 | 36.1 | 0.0138 | 58.2 | 36.0 | 41.5 | 0.0134 | 52.2 |
普通玉米Common corn | 44.5 | 31.0 | 0.0158 | 56.8 | 32.5 | 36.4 | 0.0209 | 51.0 | |
青贮玉米Silage corn | 37.0 | 28.0 | 0.0169 | 49.4 | 41.0 | 34.9 | 0.0236 | 60.3 | |
甜玉米Sweet corn | 44.2 | 30.9 | 0.0147 | 55.8 | 42.4 | 33.7 | 0.0229 | 59.5 | |
高油玉米High oil corn | 40.2 | 22.3 | 0.0276 | 52.9 | 40.3 | 32.9 | 0.0196 | 56.7 | |
蜡熟期 Dough stage | 糯玉米Waxy corn | 46.4 | 28.5 | 0.0144 | 58.0 | 29.6 | 32.5 | 0.0203 | 45.7 |
普通玉米Common corn | 45.0 | 16.1 | 0.0230 | 53.7 | 32.4 | 33.8 | 0.0189 | 48.4 | |
青贮玉米Silage corn | 47.6 | 25.4 | 0.0316 | 59.4 | 37.6 | 32.8 | 0.0313 | 54.8 | |
甜玉米Sweet corn | 40.3 | 29.9 | 0.0162 | 53.0 | 34.0 | 28.8 | 0.0162 | 47.1 | |
高油玉米High oil corn | 44.6 | 19.7 | 0.0164 | 53.5 | 32.8 | 33.1 | 0.0191 | 48.6 | |
SEM | 0.82 | 2.82 | 0.0045 | 1.04 | 1.16 | 3.19 | 0.0027 | 2.43 | |
P值 P value | M | *** | *** | NS | NS | *** | NS | NS | *** |
V | *** | *** | NS | *** | *** | NS | ** | ** | |
M×V | *** | NS | NS | *** | ** | NS | * | NS |
项目 Item | aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) |
---|---|---|---|---|
叶片 Leaf blade | 29.1c | 42.3a | 0.0195 | 49.7c |
叶鞘 Leaf sheath | 34.7b | 32.1b | 0.0215 | 50.8bc |
茎秆 Stem | 43.2a | 26.8c | 0.0188 | 55.0a |
苞叶Husk | 36.0b | 34.1b | 0.0206 | 52.6b |
SEM | 0.4 | 1.0 | 0.0010 | 0.6 |
P 值P value | *** | *** | NS | *** |
Table 4 In vivo dry matter degradation kinetic characteristics of different morphological fractions
项目 Item | aDM (%) | bDM (%) | cDM (%·h-1) | EDDM (%) |
---|---|---|---|---|
叶片 Leaf blade | 29.1c | 42.3a | 0.0195 | 49.7c |
叶鞘 Leaf sheath | 34.7b | 32.1b | 0.0215 | 50.8bc |
茎秆 Stem | 43.2a | 26.8c | 0.0188 | 55.0a |
苞叶Husk | 36.0b | 34.1b | 0.0206 | 52.6b |
SEM | 0.4 | 1.0 | 0.0010 | 0.6 |
P 值P value | *** | *** | NS | *** |
成熟期 Mature stage | 品种 Variety | 叶片Leaf blade | 叶鞘 Leaf sheath | ||||||
---|---|---|---|---|---|---|---|---|---|
aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) | aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) | ||
乳熟期 Milk stage | 糯玉米Waxy corn | 13.6 | 64.7 | 0.0235 | 48.0 | 39.4 | 33.8 | 0.0452 | 59.3 |
普通玉米Common corn | 39.5 | 40.4 | 0.0270 | 61.3 | 37.8 | 35.7 | 0.0242 | 56.7 | |
青贮玉米Silage corn | 45.5 | 39.0 | 0.0216 | 66.3 | 43.8 | 24.2 | 0.0485 | 58.9 | |
甜玉米Sweet corn | 19.0 | 53.6 | 0.0284 | 49.5 | 42.2 | 35.9 | 0.0192 | 59.5 | |
高油玉米High oil corn | 46.0 | 35.3 | 0.0420 | 68.8 | 52.7 | 26.9 | 0.0277 | 67.9 | |
蜡熟期 Dough stage | 糯玉米Waxy corn | 47.1 | 28.6 | 0.0306 | 62.9 | 45.0 | 20.4 | 0.0477 | 58.7 |
普通玉米Common corn | 33.1 | 49.8 | 0.0217 | 59.3 | 46.6 | 25.2 | 0.0258 | 60.8 | |
青贮玉米Silage corn | 34.4 | 36.4 | 0.0256 | 53.8 | 34.0 | 27.9 | 0.0346 | 50.7 | |
甜玉米Sweet corn | 47.8 | 27.7 | 0.0516 | 66.1 | 46.5 | 27.7 | 0.0261 | 62.4 | |
高油玉米High oil corn | 30.9 | 43.5 | 0.0265 | 54.7 | 45.0 | 26.2 | 0.0291 | 59.4 | |
SEM | 4.23 | 4.06 | 0.0047 | 3.18 | 0.89 | 2.22 | 0.0078 | 1.21 | |
P值 P value | M | * | *** | NS | NS | NS | *** | NS | ** |
V | NS | NS | *** | NS | *** | * | ** | *** | |
M×V | *** | *** | *** | *** | *** | *** | NS | *** |
Table 5 In vivo crude protein degradation kinetic characteristics of leaf blade and leaf sheath for five variety corn stalk harvested at two maturity stages
成熟期 Mature stage | 品种 Variety | 叶片Leaf blade | 叶鞘 Leaf sheath | ||||||
---|---|---|---|---|---|---|---|---|---|
aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) | aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) | ||
乳熟期 Milk stage | 糯玉米Waxy corn | 13.6 | 64.7 | 0.0235 | 48.0 | 39.4 | 33.8 | 0.0452 | 59.3 |
普通玉米Common corn | 39.5 | 40.4 | 0.0270 | 61.3 | 37.8 | 35.7 | 0.0242 | 56.7 | |
青贮玉米Silage corn | 45.5 | 39.0 | 0.0216 | 66.3 | 43.8 | 24.2 | 0.0485 | 58.9 | |
甜玉米Sweet corn | 19.0 | 53.6 | 0.0284 | 49.5 | 42.2 | 35.9 | 0.0192 | 59.5 | |
高油玉米High oil corn | 46.0 | 35.3 | 0.0420 | 68.8 | 52.7 | 26.9 | 0.0277 | 67.9 | |
蜡熟期 Dough stage | 糯玉米Waxy corn | 47.1 | 28.6 | 0.0306 | 62.9 | 45.0 | 20.4 | 0.0477 | 58.7 |
普通玉米Common corn | 33.1 | 49.8 | 0.0217 | 59.3 | 46.6 | 25.2 | 0.0258 | 60.8 | |
青贮玉米Silage corn | 34.4 | 36.4 | 0.0256 | 53.8 | 34.0 | 27.9 | 0.0346 | 50.7 | |
甜玉米Sweet corn | 47.8 | 27.7 | 0.0516 | 66.1 | 46.5 | 27.7 | 0.0261 | 62.4 | |
高油玉米High oil corn | 30.9 | 43.5 | 0.0265 | 54.7 | 45.0 | 26.2 | 0.0291 | 59.4 | |
SEM | 4.23 | 4.06 | 0.0047 | 3.18 | 0.89 | 2.22 | 0.0078 | 1.21 | |
P值 P value | M | * | *** | NS | NS | NS | *** | NS | ** |
V | NS | NS | *** | NS | *** | * | ** | *** | |
M×V | *** | *** | *** | *** | *** | *** | NS | *** |
成熟期 Mature stage | 品种 Variety | 茎秆 Stem | 苞叶 Husk | ||||||
---|---|---|---|---|---|---|---|---|---|
aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) | aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) | ||
乳熟期 Milk stage | 糯玉米Waxy corn | 73.0 | 10.10 | 0.0461 | 79.7 | 53.7 | 32.0 | 0.0207 | 69.7 |
普通玉米Common corn | 66.5 | 9.15 | 0.0521 | 72.9 | 44.1 | 37.1 | 0.0300 | 66.2 | |
青贮玉米Silage corn | 70.7 | 11.60 | 0.0408 | 78.0 | 64.5 | 19.2 | 0.0376 | 76.9 | |
甜玉米Sweet corn | 73.9 | 6.27 | 0.0329 | 77.8 | 64.2 | 23.2 | 0.0277 | 78.5 | |
高油玉米High oil corn | 59.5 | 14.40 | 0.0480 | 69.0 | 65.9 | 23.9 | 0.0296 | 79.9 | |
蜡熟期 Dough stage | 糯玉米Waxy corn | 69.0 | 11.00 | 0.0596 | 77.0 | 60.1 | 20.2 | 0.0582 | 70.4 |
普通玉米Common corn | 66.9 | 8.36 | 0.0689 | 73.4 | 67.4 | 14.5 | 0.0500 | 76.2 | |
青贮玉米Silage corn | 64.9 | 10.50 | 0.0798 | 73.4 | 60.3 | 22.0 | 0.0317 | 73.1 | |
甜玉米Sweet corn | 71.3 | 7.07 | 0.0751 | 76.9 | 58.3 | 21.4 | 0.0253 | 70.6 | |
高油玉米High oil corn | 63.8 | 9.71 | 0.0949 | 70.0 | 64.9 | 16.5 | 0.0673 | 74.4 | |
SEM | 2.14 | 1.35 | 0.0111 | 1.76 | 2.06 | 2.60 | 0.0103 | 1.40 | |
P值 P value | M | NS | NS | *** | NS | ** | *** | ** | NS |
V | *** | *** | NS | *** | *** | NS | NS | *** | |
M×V | NS | NS | NS | NS | *** | *** | NS | *** |
Table 6 In vivo crude protein degradation kinetic characteristics of stem and husk for five variety corn stalk harvested at two maturity stages
成熟期 Mature stage | 品种 Variety | 茎秆 Stem | 苞叶 Husk | ||||||
---|---|---|---|---|---|---|---|---|---|
aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) | aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) | ||
乳熟期 Milk stage | 糯玉米Waxy corn | 73.0 | 10.10 | 0.0461 | 79.7 | 53.7 | 32.0 | 0.0207 | 69.7 |
普通玉米Common corn | 66.5 | 9.15 | 0.0521 | 72.9 | 44.1 | 37.1 | 0.0300 | 66.2 | |
青贮玉米Silage corn | 70.7 | 11.60 | 0.0408 | 78.0 | 64.5 | 19.2 | 0.0376 | 76.9 | |
甜玉米Sweet corn | 73.9 | 6.27 | 0.0329 | 77.8 | 64.2 | 23.2 | 0.0277 | 78.5 | |
高油玉米High oil corn | 59.5 | 14.40 | 0.0480 | 69.0 | 65.9 | 23.9 | 0.0296 | 79.9 | |
蜡熟期 Dough stage | 糯玉米Waxy corn | 69.0 | 11.00 | 0.0596 | 77.0 | 60.1 | 20.2 | 0.0582 | 70.4 |
普通玉米Common corn | 66.9 | 8.36 | 0.0689 | 73.4 | 67.4 | 14.5 | 0.0500 | 76.2 | |
青贮玉米Silage corn | 64.9 | 10.50 | 0.0798 | 73.4 | 60.3 | 22.0 | 0.0317 | 73.1 | |
甜玉米Sweet corn | 71.3 | 7.07 | 0.0751 | 76.9 | 58.3 | 21.4 | 0.0253 | 70.6 | |
高油玉米High oil corn | 63.8 | 9.71 | 0.0949 | 70.0 | 64.9 | 16.5 | 0.0673 | 74.4 | |
SEM | 2.14 | 1.35 | 0.0111 | 1.76 | 2.06 | 2.60 | 0.0103 | 1.40 | |
P值 P value | M | NS | NS | *** | NS | ** | *** | ** | NS |
V | *** | *** | NS | *** | *** | NS | NS | *** | |
M×V | NS | NS | NS | NS | *** | *** | NS | *** |
项目 Item | aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) |
---|---|---|---|---|
叶片 Leaf blade | 36.0d | 41.7a | 0.0300b | 59.2b |
叶鞘 Leaf sheath | 43.2c | 28.2b | 0.0330b | 59.3b |
茎秆 Stem | 68.0a | 9.8d | 0.0588a | 74.7a |
苞叶Husk | 60.3b | 23.0c | 0.0373b | 73.6a |
SEM | 1.04 | 1.04 | 0.0028 | 0.75 |
P 值P value | *** | *** | *** | *** |
Table 7 In vivo crude protein degradation kinetic characteristics of different morphological fractions
项目 Item | aCP (%) | bCP (%) | cCP (%·h-1) | EDCP (%) |
---|---|---|---|---|
叶片 Leaf blade | 36.0d | 41.7a | 0.0300b | 59.2b |
叶鞘 Leaf sheath | 43.2c | 28.2b | 0.0330b | 59.3b |
茎秆 Stem | 68.0a | 9.8d | 0.0588a | 74.7a |
苞叶Husk | 60.3b | 23.0c | 0.0373b | 73.6a |
SEM | 1.04 | 1.04 | 0.0028 | 0.75 |
P 值P value | *** | *** | *** | *** |
项目Item | aDM | bDM | cDM | EDDM | aCP | bCP | cCP | EDCP |
---|---|---|---|---|---|---|---|---|
有机质Organic matter | 0.668*** | -0.473** | 0.036 | 0.470** | 0.788*** | -0.691*** | 0.430** | 0.776*** |
粗蛋白Crude protein | -0.616*** | 0.663*** | -0.124 | -0.271 | -0.596*** | 0.677*** | -0.329* | -0.454** |
磷Phosphorus | -0.482** | 0.601*** | 0.085 | -0.064 | -0.393* | 0.592*** | -0.488** | -0.187 |
中性洗涤纤维Neutral detergent fiber | -0.211 | -0.115 | 0.001 | -0.383* | 0.115 | -0.139 | -0.088 | 0.048 |
酸性洗涤纤维Acid detergent fiber | 0.124 | -0.360* | -0.109 | -0.202 | 0.116 | -0.328 | 0.255 | -0.077 |
Table 8 Pearson correlation coefficients between degradation kinetic characteristics and chemical composition (n=40)
项目Item | aDM | bDM | cDM | EDDM | aCP | bCP | cCP | EDCP |
---|---|---|---|---|---|---|---|---|
有机质Organic matter | 0.668*** | -0.473** | 0.036 | 0.470** | 0.788*** | -0.691*** | 0.430** | 0.776*** |
粗蛋白Crude protein | -0.616*** | 0.663*** | -0.124 | -0.271 | -0.596*** | 0.677*** | -0.329* | -0.454** |
磷Phosphorus | -0.482** | 0.601*** | 0.085 | -0.064 | -0.393* | 0.592*** | -0.488** | -0.187 |
中性洗涤纤维Neutral detergent fiber | -0.211 | -0.115 | 0.001 | -0.383* | 0.115 | -0.139 | -0.088 | 0.048 |
酸性洗涤纤维Acid detergent fiber | 0.124 | -0.360* | -0.109 | -0.202 | 0.116 | -0.328 | 0.255 | -0.077 |
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