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转Bt基因抗虫棉的突出抗虫性和较好的综合农艺性状已逐渐被棉农所认识,但其作为一种新生的棉花品种类型,只有采取相应的配套栽培技术。其内在的优良特征、特性才能得以充分表达。针对抗虫棉的特征、特性和试种示范中存在的问题,提出几点看法,以供参考。 1 科学间作套种 抗虫棉对大龄幼虫的抗性相对较低,并且对棉铃虫的抗性在棉花生育前期较强,后期有所减弱。当其与大豆、西瓜、蔬菜等类作物间作套种时,由于棉铃虫为杂食性昆虫,会在此类作物上产卵孵化、取食,长大后转移到棉花上继续危害。因此,抗虫棉应避免与大豆、西瓜、蔬菜等类作物间作套种。
Outstanding insect resistance and better comprehensive agronomic traits of transgenic Bt cotton have gradually been recognized by cotton farmers, but as a new cotton variety type, only corresponding cultivation techniques should be adopted. Its inherent good features, characteristics can be fully expressed. In view of the characteristics and characteristics of insect-resistant cotton and the problems existing in the demonstration, a few suggestions are put forward for reference. 1 intercropping intercropping cotton insect resistance to older larvae is relatively low, and the resistance of cotton bollworm in the early cotton growth stage, later weakened. When intercropped with crops such as soybean, watermelon and vegetables, the cotton bollworm is omnivorous and will hatch and feed on such crops and transfer to cotton when grown up to continue the harm. Therefore, insect-resistant cotton should avoid intercropping with crops such as soybean, watermelon and vegetables.