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马尾松毛虫(Dendrolimus punctatus Walker)发生广,繁殖率大,是森林的大害虫。为了加速防治,我们开展了松毛虫利用的研究,现将初步研究结果整理于后供参考。 (一)松毛虫幼虫制肥试验 1.松毛虫含肥量的分析及与其他常用农家肥料的比较 我们将松毛虫幼虫杀死后与水各半掺后置于缸中,加盖让其腐烂,然后将所浸的液体进行了肥分的分析。其结果为含氨态氮0.4365％,全量氮0.625％,含全磷0.55％,含全钾0.41％,完全证明了松毛虫含肥量是很高的。现将松毛虫与其他农家常用肥料的比较列表于下:
Dendrolimus punctatus Walker occurs widely and has a high reproductive rate. It is a large pest of the forest. In order to speed up prevention and control, we carried out the study of the use of pine caterpillars, and now the preliminary findings are collated for reference. (A) Dendrolimus larvae fertilizer test 1. Dendrolimus fat content analysis and comparison with other commonly used farmyard manure We kill the larvae of pine caterpillars and water after each half-mixed placed in the tank, stamped to make it rot , And then the dip of liquid fat analysis. The results showed that 0.4365% of ammonia nitrogen, 0.625% of total nitrogen, 0.55% of total phosphorus, containing 0.41% of potassium, fully proved that the content of pine caterpillar is very high. Now Deer caterpillar and other farms commonly used fertilizer comparison list below: