不同氮肥运筹方法对免耕抛秧稻产量影响的对比试验

A Comparative Trial on Integrated Application of Different Nitrogen Fertilizers into Free-Tilling and Seedling-Throwing Paddy and Its Effect on Yield of Paddy

免耕抛秧晚稻在氮、磷、钾肥施用量相同条件下,氮肥以基肥占20%、立苗后第一次追肥占30%、分蘖肥占20%、穗前肥占30%的运筹方法较适宜免耕抛秧稻前缓中快后稳等生长发育特点的需要,可为穗大粒多打下良好基础,从而获得较高的产量。

Free-tilling and earlier seedling-throwing paddy variety would bring a bout high yield if appropriately applying chemical fertilizers, for example, 20% of nitrogen as basic fertilizer, 30% as the following added fertilizer, 20% add ed at the time of stump separating and 30% added prior to ear bearing. Such an i ntegrated method of fertilizer application is suited to the growth of the charac teristics of such a sort of paddy.