Effects of irrigation quota on yield and quality of summer-sown, naked oat

Abstract

Abstract: Randomized block field experiments were conducted to determine the effects of irrigation quota on grain yield, quality, mineral element contents, and forage quality of naked oat (Avena sativa). The highest grain yield was achieved with an irrigation quota of 150 mm under drip irrigation (W4), followed by W5, CK, W3, W2, W1. The main yield components were reduced to certain extent with less irrigation (treatments W1, W2, and W3). Grains per spike and spike numbers/ha were significantly reduced, and led to a significant reduction in yield. The best grain quality was obtained with an irrigation quota of 120 mm under drip irrigation conditions (W3). Compared with the traditional irrigation treatment (CK), crude protein, crude fat, and β-glucan content in W3 were increased by 4.53%, 8.58% and 23.10% respectively (P<0.05). Potassium, zinc, iron, copper, and manganese levels of grains under W3 treatment were significantly higher than those of the traditional irrigation (CK), but calcium and magnesium contents were not significantly different. The W3 treatment had better forage quality. Additionally, the digestible dry matter and relative feeding value of W3 were 3.37% and 9.28% higher than those of the CK (P<0.05).

CLC Number:

S512.60

WU Na, BU Hong-zhen, ZENG Zhao-hai, REN Chang-zhong, HU Yue-gao. Effects of irrigation quota on yield and quality of summer-sown, naked oat[J]. Acta Prataculturae Sinica, 2010, 19(5): 204-209.

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