黑龙江省佳木斯地区水稻褐变穗田间药剂防治试验

Field Control Experiment of Rice Browning Ear in Jiamusi Municipality of Heilongjiang Province

水稻褐变穗病是黑龙江省水稻生产中主要穗部病害之一,近年来在佳木斯地区水稻褐变穗的发生有上升趋势,感染水稻褐变穗的水稻产量和稻米品质都会下降。水稻褐变穗的主要致病病原菌是稻链格孢(A.alternara(Fr.)Keissler),试验主要选择了3种药剂在水稻开花期进行喷雾防治水稻褐变穗,确定不同药剂对水稻褐变穗的防治效果,为该病害防治提供依据。试验采取随机区组设计,通过调查不同药剂处理后褐变穗的病情指数来确定试验效果,试验结果表明:在水稻开花期施药防治水稻褐变穗,强盛的防效为80.9%~92.2%,金力士的防效为81.0%~90.9%,稻秧安的防效为48.4%~55.0%。

Rice browning ear disease is one of the major panicle diseases in rice production in Heilongjiang Province. In recent years, the occurrence of rice browning ear in Jiamusi region has an upward trend, and the yield and quality of rice infected with rice browning ear will decline. The main pathogenic pathogen of brown rice panicle is A.alternara (Fr.) Keissler. In this experiment, 3 kinds of pesticides were selected to control rice browning panicles during the flowering season, and the control effect of different pesticides on browning spikes of rice was determined, so as to provide basis for prevention and control of the disease. Random block design was adopted to determine the effect of the experiment by investigating the disease index of browning panicles treated with different pesticides. The results showed that the strong control effect was 80.9%~92.2%, the Jinlishi control effect was 81.0%~90.9%, and the rice seedling safety control effect was 48.4~55.0%.