论文部分内容阅读
目前推广使用的稻瘟净乳剂是防治稻瘟病的有效药剂。为了解决乳剂在原料、运输和使用上的一些缺点,三明农药厂又生产一种新的剂型,即百分之三十的稻瘟净可湿性粉剂。一九七二年早季,我们用省农科站提供的这种产品进行了较大面积的防治早稻穗颈瘟试验。试验分小面积对比和大田防治示范两部分,防治面积共六十多亩,地点在沙县茅坪大队、镇头大队和地区畜牧良种场,对象选用“早珍珠”、“二九早”和“金星早”等感病品种,在早稻始穗至灌浆期间选择叶瘟发生较均匀的田块进行喷药,每亩喷药量一百五十斤至二百斤,于最后一次喷药后十天检查穗颈瘟的发生情况,并分级统计防治效果。试验结果表明,稻瘟净可湿性粉剂对早稻穗颈稻瘟病有一定的防治效果,五百倍液比六
The current promotion of the use of rice blast net emulsion is an effective control of blast disease. In order to solve some of the shortcomings of the raw materials, transportation and use of the emulsion, Sanming Pesticide Factory produced a new dosage form, that is, 30% of the WPG WP. In the early part of 1972, we conducted a large-scale prevention and treatment of early rice panicle neck blast with this product provided by the Provincial Agricultural Science Station. The experiment was divided into two parts: small area comparison and field prevention and control demonstration. The control area was more than 60 mu. The locations were in Maoping Brigade and Zhen Tau Brigade in Shaxian County and livestock farms in the area. The objects used were “Pearl early”, “ ”And “ Venus early ”and other susceptible varieties, during the early rice to grain filling period to choose a more uniform plots of field spraying, pesticide spray per acre 150 kg to 200 jin at Ten days after the last spraying check the occurrence of panicle blast, and grading statistical control effect. The test results show that the blast of rice WP can have some control effect on the panicle blast of rice in early stage,