摘要
田间试验结果表明 :稻小球菌核病的发病率随着施N水平的增加而增加 ,随着施K水平的增加而降低 ,施肥比例约为N∶P∶K =1∶0 .3∶0 .5 ;随着水层深度的增加 ,发病率也增加 ,每增加 1cm水层 ,发病率 6 .4 % ;最佳水层 3cm ;割茬高度和种植年限增加 。
The experimental results in paddy field showed the incidence of rice disease caused by nalataea sigmoideam (cav.) was increased as nitrogenous fertilizer added and was reduced when sufficient potassium fertilizer was used, the proper ratio of N∶P∶K was 1∶0.3∶0.5. When 1 cm of water level on the rice field was raised, 6.4% incidence of the disease should be increased, and 3 cm of water level on rice field was suitable to rice. Much more rice stubble were leaved in field and continuous rice were planted, the disease was serious.
出处
《黑龙江农业科学》
2002年第5期16-17,共2页
Heilongjiang Agricultural Sciences
关键词
小球菌核病
栽培条件
发病率
水稻
rice
nalataea sigmoideam(cav.)
cultivated condition
incidence
