水稻耐氨固氮菌施用效应研究  

Effects of Ammonia Resistant Strains of N2-fixing Bacteria on Paddy Rice

作　　者：柯玉诗[1] 黄继茂[1] 黄小红[1] 肖参明[1] 伦杏娟 

机构地区：[1]广东省农业科学院土肥所,广东广州510640

出　　处：《土壤与环境》2000年第4期301-303,共3页Soil and Environmental Sciences

基　　金：国家863计划项目!(101-03-04-01)

摘　　要：早、晚两季的田间试验结果表明，在电脑推荐施N水平上，耐氨固氮菌的增产效果不显著；在低N情况下（每公顷减纯N 37.5 kg），耐氨固氮菌的增产效果达显著水平，早、晚稻分别增产8.41%和7.21%。15N示踪盆栽试验结果表明，耐氨固氮菌对根系生长有明显的促进作用，在秧苗期明显增加秧苗对肥料15N的吸收，禾苗分蘖盛期则增强了禾苗根系的吸氮能力。Field trials were conducted on the early rice and the late rice. The results showed that the yield increased by Ammonia Resistant Strains of N2-fixing Bacteria (ARSNFB) was insignificant when nitrogen was supplied enough at the recommended amount. But the increased yields were significant when nitrogen supply was lower (when N was decreased by 37.5 kg/hm2 ), which were 8.41% in early rice and 7.21% in late rice. In pot trials with 15N tracer, root growth was evidently promoted by ARSNFB, the 15N contents of paddy shoots were increased, and nitrogen absorption capacity was enhanced at peak tillering after transplanting.

关 键 词：耐氨固氮菌 水稻 增产效果 根系生长 施用效果 

分 类 号：S511.062[农业科学—作物学] S144.5