【摘要】 亩用“40％多菌灵胶悬剂”有效成分40克加水40—50kg于R₂（大豆开花盛期）至R₃（结荚始期）最迟至R₄（结荚盛期）在以“合丰25号”,“绥农4号”为主的大豆品种上,田间常规喷雾防治大豆灰斑病100.68万亩。据5县58个防治地块调查,病粒率降为0—21.4％平均5.44％;防治效果35.1—100.0％平均71.8％。又据15个重点防治点调查,防后大豆平均增产12.1％,百粒增重1—2g,亩可多产大豆18.0kg,并能提高大豆一个等级,改善大豆品质。并对药剂品种及剂型、施药器械、施药时期及次数进行了重点研究。更多还原

【Abstract】 The control of Frog eye leaf spot in the soybean fields of varieties Hefeng 25 and Suinong 4 on 1,006,800 mu by spraying 40 gram per mu of effective ingredient of 40% arbendazin Colloid solution diluted with 40-50 kg of water was undertaken from full bloom to the beginning of pod formation of full pod formation. According to the investigation in 58 plots of 5 counties,the diseased grains decreased from 5.3-36.6% (the average is 5.44%)to 0-21.4%, (the average is 19.5%).The controlling effect is 35.1-100.0%, (the average is 71.8%). Acceding to another investigation in 15 important disease controlling plots the yield of soybean has been increased 12.1% in average against that the control. The weight of 100 grains has been increased 1-2 g. Soybean yield in average per mu is increased by 18.0 kg, and marketing quality, had been raised one grade and quality of soybean improved. Meanwhile, the different kinds of formulation, instruments for applying fungicide, applying time and frequency of this disease were also investigated.更多还原