Rice stem and leaf nutrient contents and effects of stubble heights on the nutrient contents of rice straw

Abstract

Abstract: The utilization of rice straw has increased with the rapid development of animal husbandry. Feeding value of rice straw varies with the variety. The agronomic traits of five rice varieties (Taiyou 99, Yuxiang 203, Fengyou 22, Peizataifeng and Ⅱyou 368) and their nutrient contents and dry matter digestibility of stem and leaf were measured, and the effects of different stubble heights on the nutrient contents of their straw were investigated. Fengyou 22 had a higher feeding value than the others based on the agronomic traits, crude protein content and digestibility. Leaves of rice had more crude protein and crude ash, less nitrogen free extract and lower dry matter digestibility than stems. Stubble heights of rice straw had less effect on the nutrient contents. In order to increase straw yield, rice should be harvested at 3-5 cm from the ground.

CLC Number:

CHEN Ming-xia, HUANG Yan-fang, CUI Wei-dong, FENG Fan, LIU Qin-hua, ZHANG Jian-guo. Rice stem and leaf nutrient contents and effects of stubble heights on the nutrient contents of rice straw[J]. Acta Prataculturae Sinica, 2012, 21(1): 285-290.

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