【摘要】 应用 5种不同浓度的绿得保生物农药林间喷粉防治马尾松毛虫 ,结果表明 ,绿得保∶轻质碳酸钙为 4∶10 0、5∶10 0的配比浓度既经济 ,效果又好 ,林间杀虫效果依次为 92 13%、95 2 3% ,为大面积防治提供了可靠依据更多还原

【Abstract】 Five concentrations of Ludebao,a biotic pesticide,were dusted against Dendrolimus punctatus in the forest.The result showed that Ludebao raw dust and light calcium carbonate mixed in the proportion of 4∶100 and 5∶100 in weight were effective and economic.Their control effect reached 92 13% and 95 23% respectively.更多还原