蓖麻、黑豆间作对黑豆主要害虫防除效果的研究

Studies on Effects of Intercropping Castor and Black Soybean on Biological Prevention and Control of Major Pests of Black Soybean

试验研究了蓖麻、黑豆间作对黑豆主要害虫的防除效果。结果表明:蓖麻与黑豆间作,对防除大豆蚜虫和大豆食心虫有明显效果,但因品种不同,防虫效果有差异。中熟品种“吉黑豆2号”比早熟品种“吉黑豆1号”抗大豆蚜虫和大豆食心虫。蓖麻与抗虫性较差的品种“吉黑豆1号”间作,单株蚜虫头数比清种下降61.5％;蓖麻与抗虫性较强的品种“吉黑豆2号”间作,单株蚜虫头数、比清种下降32.4％。蓖麻与2个黑豆品种间作,均以蓖麻与黑豆间作行比2:4处理防虫效果较好。

The effects of intercropping castor and black soybean on biological prevention and control of major pests of black soybean were studied. The results show that the midseason variety, Ji-black soybean 2, is higher in resistance to Aphis glycines and to Leguminivora glycinivorella than the early variety, Jiblack soybean 1. The intercropping of castor and black-soybean is of significant effect on prevention and control of Aphis glycines and Leguminivora glycinivorella, but the effect differs when the variety is different. When castor and black-soybean 1 which is of weak resistance to pests are intereropped, the number of aphids per plant and the rate of pest damage decrease by 61.5% and 16.2% respectively than single cropping. When castor and black-soybean 2 which is of high resistance to pests are intercropped, the number of aphids per plant decreases 32.4% than single cropping. When castor and the two black-soybean varieties are intercropped, with the same row arrangement as 2:4, the effect on prevention and control of Aphis glycines and Leguminivora glycinivorella is better.