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正确地掌握二代粘虫在当地常年为害水稻的损失,防治及效果,进而提出比较恰当的防治指标,有着十分重要的意义。为此1982～83年我们承担了省协作组布置的“粘虫为害水稻损失率测定”这一课题。现将试验结果小结于后。 一、试验材料及方法 试验田选择在本县招堤公社、空坟生产队,海拔1360米。试验面积0.5亩,土壤肥力中等(有机质含量占4.26％、全氮0.089％、速效磷6PPM pH值8.5)。土种黄大泥田(这一类型田占全县稻田面积的26.93％),供试品种1982年为湘东、1983年为桂朝2号、禾苗长势中等、窝行距5×7(寸),每丛7片栽插及管理按一般水平。
It is of great significance to correctly understand the loss, prevention and control effects of the second generation armyworm (Mythimna separata Walker) on perennial pests in the area and to put forward more appropriate prevention and control measures. To this end, from 1982 to 1983, we undertook the task of “the determination of the rate of loss of paddy worm affected by armyworm” arranged by the provincial cooperative group. Now the summary of the test results in the post. First, the test materials and methods Experimental field selection in the county embankment commune, empty tomb production team, 1360 meters above sea level. The test area of 0.5 acres, medium fertility (organic matter content of 4.26%, total nitrogen 0.089%, available phosphorus 6PPM pH 8.5). Soil type Huangda muddy field (this type of field accounts for 26.93% of the county paddy area), the test varieties in 1982 for the Eastern Hunan, 1983 for the Gui Chau 2, seedlings grow medium, nest spacing 5 × 7 (inch), each plexus 7 planting and management according to the general level.