论文部分内容阅读
1990年,青田县农业局经作站从西德进口5.7％百树得乳油进行小面积的防治柑桔吸果夜蛾试验,平均防效达95％以上,1991年,在省内外应用和推广防效显著,深受广大用户的欢迎和好评。现将试验情况介绍如下:一、试验情况试验于1991年在本县7个区各乡的成龄投产温州蜜柑园进行。共设14个小区,计面积12余亩,方法是:在往年夜蛾为害最严重的山地桔园上,每块分别选头、中、尾地段定点、定株进行考查。喷药时间大都在8月中旬至采果前15～20天进行连续防治。试验设4个处理:分别为1000倍液,喷4次,每次喷药间隔期25天,重复3次;2000倍液,喷4次,间隔期20天,重复4次;3000倍液,喷5次,间隔期15天,重复4次;不喷药作为对照,重复3次。在考查株上第一次喷药
In 1990, Qingtian County Bureau of Agriculture Jingzuo Station imported 5.7% from West Germany to obtain EC cream for small-scale control citrus fruitworm, the average control effect of more than 95% in 1991, the province and outside the application and promotion Significant effect, welcomed by the majority of users and praise. Now the test situation is described as follows: First, the test conditions Test in 1991 in the county’s seven townships into the rural mature Citrus Orange Park. A total of 14 residential area of more than 12 acres, the method is: in the past three years most moth damage on the orange garden, each of the first election, in the tail of the site, set plants for examination. Spraying time mostly in mid-August to 15-20 days before picking fruit for continuous control. Test set up four treatments: 1000 times the liquid, spray 4 times, each spray interval 25 days, repeated 3 times; 2000 times the liquid, spray 4 times, 20 days interval, repeat 4 times; 3000 times, Spray 5 times, 15 days interval, repeat 4 times; do not spray as a control, repeat 3 times. In the test strain for the first time spraying