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将552—型或工农—16型手动喷雾器孔径为1.3毫米的喷头片改换一个孔径为0.7毫米的喷头片,即可进行低容量喷雾。这种方法比常规量喷雾每亩用水量减少,工效可提高8—10倍以上,对叶面害虫效果显著,现将我们1984年用这种喷雾方法防治第二代稻纵卷叶螟结果报导如下:
A low volume spray can be made by changing a nozzle plate with a hole diameter of 0.7 mm on a 552-type or a 1.3-inch nozzle plate with a 1.3 "manual or manual spray gun. This method than the conventional amount of spray water per mu to reduce the work efficiency can be increased 8-10 times more effective on the foliar pests, now we use this method of spraying in 1984 to control the second generation of rice leafroller results reported as follows: