黑龙江省水稻主要病害防治技术研究

Research on the Control Technology of Main Rice Diseases in Heilongjiang Province

在前哨农场主要病害调查的基础上,提出在水稻9~9.5叶期,75%戊唑醇·肟菌酯水分散粒剂20 g/667 m^2,用以防治水稻叶瘟;在水稻孕穗期和齐穗期,选用30%稻瘟酰胺·戊唑醇(稻安醇)悬浮剂40 ml/667 m^2+3%多抗霉素100 ml/667 m^2+2%春雷霉素100 ml/667 m^2混配的防治技术,与当地水稻种植户防病技术相比较,结果表明:此项技术对叶瘟的防效高达89.5%,并且可以在水稻生育后期有效控制穗颈瘟、纹枯病、鞘腐病和褐变粒的发生;在产量方面,与常规防治方法相比增产5.35%,说明此项病害防治措施可以有效降低水稻主要病害的发生,同时提高水稻产量,值得大面积应用和推广。

On the basis of the investigation of major diseases in Qianshao farm,it was proposed that 75%tebuconazole·trifloxystrobin aqueous dispersive granule 20 g/667 m^2 in 9-9.5 leaf stage of rice could be used to prevent rice leaf plague.Choose in rice booting stage and full panicle stage,30%of rice blast,amide(rice alcohol),suspending agent 40 ml/667 m^2+3% called 100 ml/667 m^2+2%heart toxin 100 ml/667 m^2 improved-pests control technology,compared with local rice farmers and preventing technology,results show that the technique of leaf blast control effect is as high as 89.5%,and can be effective in the late rice fertility control of neck blast,sheath blight,sheath rot and browning of grain;In terms of yield,compared with the conventional control methods,the yield increase was 5.35%,indicating that the disease control measures can effectively reduce the occurrence of major rice diseases and increase rice yield,which is worthy of widespread application and popularization.