High-yield and High-efficiency Planting Technology for Insect-Resistant Transgenic Hybrid Cotton KB02

The effects of density,nitrogen fertilizer,and 1-dimethylpiperidyliumchloride(DPC) on the yield and main characters of hybrid cotton KB02 were studied using general rotational regression design method and a mathematic model involving the three factors and seed cotton yield was established.The results indicated that the affecting degree of the three factors on seed cotton yield was as follows: plant densitynitrogen fertilizerDPC.There were interaction effects between density and nitrogen fertilizer,density and DPC.In the horizontal range of-1.682≤x≤1.682(i.e.plant density was 30 000 ind/hm2,nitrogen fertilizer was 337.5 kg/hm2,DPC was 90.0 g/hm2),the yield of KB02 could be up to the high yield of 4 344.71 kg/hm2.