不同氮水平下三种固氮菌剂对油菜及土壤中氮素的影响

The Effect on Three Types of Azotobacters to Nitrogen in Soil and Rape in Different Nitrogen Levels

通过在油菜盆栽试验中施加不同浓度的尿素和三种不同的固氮菌剂,比较分析了油菜和土壤中氮素的变化,结果表明:在施加尿素为2g/kg的范围内,土壤和植物中的氮素会随着尿素施入量的增多而增多;并且从马铃薯增产菌剂中分离出来的固氮菌比从生根旺菌肥和玉米复合微生物菌剂中分离出来的菌肥在施氮量适中的情况下固氮能力比较强。可为固氮菌肥的合理有效施用与氮肥的优化配比及探求作物高产优质的生物调控提供理论依据。

The text cultivated in pots to analyze and compare the nitrogen s variation in rape and soil through fertilized different concentrations of ureas and three kinds of differents Azotobacters in soil of rape,the result indicated: Within the range of 2g/kg of the urea,the contents of soil and rapes will increase along with increased the rate of ureas fertilizer;and in the proper codition,the azotobacter s ability which picked-up from the potato yield-increasing bacteria batter than which picked-up from rooting-...