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Bt基因抗虫棉与瓜、菜、薯间作,不但提高了棉田的经济效益,同时还提高了农田环境效益,克服了普通棉花与瓜、菜、薯间作,治虫施药多,瓜菜薯污染严重的弊病,保护了农田有益昆虫。 1 经济效益好 1996～1997年,在武清县城关镇柳林屯,无梁庙、河西务乡韩庄等村镇,示范35hm~2,抗虫棉与土豆、甘兰、西瓜间作,与非抗虫棉中棉16号问作棉田进行比较示范,结果抗虫棉皮棉产量为1410kg/hm~2,比中棉16号皮棉产量1357.5kg/hm~2增52.5kg皮棉,增幅为3.86％。皮棉按每公斤14元计算,每公顷增735元,每公顷减少治虫用工75个,按当地农工日资15元计算,节省用工费1125元,少用农药费600元,三项合计,每公顷
Bt transgenic cotton and melon, vegetable and potato intercropping not only improve the economic benefits of cotton field, but also improve the environmental benefits of farmland, to overcome the common cotton and melon, vegetables, potato intercropping, pest control and pesticide pollution Serious ills protect the farmland useful insects. 1 Economic Benefit From 1996 to 1997, demonstrating 35hm ~ 2 in the villages and towns of Liulin Village, Chengguan Town, Wuqing County, Liangzhu Temple without Liang Temple, and Hanzhuang Township, Hexi Township, demonstrating 35hm ~ 2, intercropping cotton and potatoes, Insect-resistant cotton Zhongmian 16 as a comparative demonstration of cotton fields, the results of insect-resistant cotton lint yield of 1410kg / hm ~ 2, than the cotton 16th lint yield 1357.5kg / hm ~ 2 by 52.5kg lint, an increase of 3.86%. Lint calculated at 14 yuan per kilogram will increase 735 yuan per hectare and reduce the number of pest-killing workers per hectare by 75 yuan. According to the local agricultural-laborer wage of 15 yuan, it will save 1125 yuan for labor costs and 600 yuan for less pesticide use.