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试验于1982—1983年在湖南常德县蒿子港进行。供试品种“湘矮早9号”,每亩施纯氮10.25公斤,每小区6蔸禾,设6～9个不同接虫量处理,1982年8次重复,1983年6次重复;在幼穗分化第4期(6月13日)接虫。试验结果表明,试虫主要为害倒二、三两叶,基本上未为害剑叶,按每虫一般取食20cm~2计算,1982年每亩8.47万头虫造成2%的产量损失,1983年每亩8.96万头虫造成2%的产量损失,与本文第Ⅰ,Ⅱ报的结果基本一致。
The experiment was carried out in 1982-1983 in Artemisia Harbor, Changde County, Hunan Province. The test varieties “Xiang short morning as 9”, per acre nitrogen fertilizer 10.25 kg, each district 6 Wo Wo, set 6 to 9 different take the amount of treatment, 1982 8 times repeated in 1983 6 times; in young Spike differentiation No. 4 (June 13) take the worm. The test results showed that the test insects mainly affect the second and third leaves, basically not harm the flag leaf, according to the general feeding of each insect 20cm ~ 2 calculation, 1982 per mu 84,700 insects caused 2% yield loss, 1983 89,600 pests per acre caused 2% of the yield loss, with the results reported in this article Ⅰ, Ⅱ are basically the same.