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氯化钡是一种白色结晶物,类似食盐,最易溶解于水,为我区盐厂工业副产品,是防治咀嚼口器的胃毒药物,1958年我们利用氯化钡作三化螟幼虫的防治试验,效果非常显著,兹将试验结果简述于后。 试验方法:每次每小区用不同稀释液200斤。小区面积为0.25亩,在双季晚稻田内进行。8月上旬是第三代化螟盛孵期,第1次防治试验在8月6日,第2次8月15日,采用药水泼苗法。 试验结果见下表:
Barium chloride is a white crystalline substance, similar to salt, the most soluble in water, as our by-product of industrial salt factory, is to prevent chewing mouthparts stomach poison drugs, 1958 we use barium chloride as larvae of the three borer Prevention and control test, the effect is very significant, the test results will be outlined in the post. Test Method: Each district with a different dilution of 200 kg. Residential area of 0.25 acres, in the double season late rice fields. In early August is the third generation of stem borer Sheng hatch, the first control test on August 6, the second August 15, the use of liquid splashed seedling method. The test results in the table below: