杜丑新 1肖云山 1丁平 2张晴 2专启迪 2王必武2
作者信息
- 1. 湖北省仙桃市农业局，湖北仙桃433000
- 2. 湖北省仙桃市土壤肥料工作站，湖北仙桃433000
- 折叠
摘要
Abstract
Objective] The aim was to study effects of adding decomposition agent on late rice growth and soil nutrients.[Method] With Xieyou46 as test variety, straw not returned to field as CK, effects of adding decomposition agents such as Jianong, Jinkuizi, Yumixiang, on late rice yield and soil nutrients under the situation of straw returned to field were studied.[ Result] Compared with CK, grain number per ear, solid grain number, seed-setting rate and 1 000-grain weight of late rice could be improved by 1.1-7.5, 3.0-6.6 grains, 1.0-5.2 persents, 0.2-0.9 g under the situation of straw returned to field, average yield was increased by 357.5 kg/hm2 , with amplification of 5.8%;soil bulk density decreased 0.03-0.06 g/cm3 , pH reduced 0.20, soil organic matter, total nitrogen, available potassium, cation ex-change capacity increased 0.15-0.26 g/kg, 0.04-0.11 g/kg, 5.00-10.00 mg/kg, 0.18-1.04 cmol/kg;adding straw decomposition a-gent on rice straw was reduced by 15 d than the natural condition of decay.[ Conclusion] Adding decomposition agent could improve late rice yield and soil nutrients, the order of yield increasing and soil nutrients improvement effect of three decomposition agents from good to poor is Jinkuizi, Jianong, Yumixiang.关键词
秸秆还田/腐熟剂/晚稻/产量/土壤养分Key words
Straw returned to field/Decomposition agent/Late rice/Yield/Soil nutrients分类
农业科技
