生态与农村环境学报2012，Vol.28Issue(1)：32-36,5.
江苏省水稻秸秆资源量及其可收集量估算
Estimation of Total Yield and Collectable Amount of Rice Straw in Jiangsu Province
摘要
Abstract
23 rice cultivars (including 19 Japonica rice and 4 Indica rice) cultivated widely in Jiangsu Province were sampled and investigated for estimation of total straw yields and collectable amounts of the straw, separately, of the crops different in cultivation system and in yield target in combination with relevant statistical data. Results show that the differences in grain/straw ratio were relatively small between cultivars (0. 98 - 1. 03) , but quite large between crops different in cultivation pattern (0.80-1.19) and in yield level (0.83-1.12). When the stubbles left in the field were 5, 10, 20, and 25 cm tall separately, the rice straw collectability coefficient was 0. 815 -0. 868,0. 668 -0. 732,0. 600 -0. 669 and 0.533 -0.618, respectively and the maximum amount of collectable straw was 1 352. 16 × 104 - 1 458.09 × 104, 1 145. 70 × 104 - 1 228. 13 × 104, 1 043. 20 × 104 - 1 121. 52 × 104 and 951. 37 × 104 - 1 021. 30 × 104 t, respectively. The rice straw (dry weight) resource of Jiangsu in 2009 was estimated at 1 585. 93 × 104 - 1 704. 92 × 104 t, which was 2. 45% - 10. 14% higher than the estimation using the conventional method. It is, therefore, concluded that the rice straw resource of Jiangsu Province is rich, but the amount of collectable rice straw is mainly affected by how tall the stubbles are left in the field and how the crop is cultivated.关键词
水稻/草谷比/秸秆资源/收集系数/江苏Key words
rice/ ratio of straw to grain/ straw resource/ collectable coefficient/ Jiangsu分类
资源环境引用本文复制引用
顾克军,张斯梅,许博,张恒敢,杨四军..江苏省水稻秸秆资源量及其可收集量估算[J].生态与农村环境学报,2012,28(1):32-36,5.基金项目
江苏省科技支撑计划(BE2010389) （BE2010389）
江苏省农业科技自主创新资金项目[cx(09)622] （09）
