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黄淮海平原棉区传统植棉为单作一熟,八十年代以来发展了麦棉两熟制。近年来,一些地区又在麦棉套种后棉田间作秋粮作物,实行粮棉三种三收。为了探讨该棉区发展粮棉多熟制的适宜途径及进一步提高粮棉产量的潜力,1987—1988年,我们在本所农场对棉田几种不同熟制作物的生产力进行了研究。
The traditional planting of cotton in the Huang-Huai-Hai Plain is a single-cropping system. Since the 1980s, wheat-cotton two-crop system has been developed. In recent years, in some areas, autumn crop has also been planted in the cotton fields after the interplanting of wheat and cotton, and grain and cotton crops have been harvested three times. In order to explore the appropriate ways to develop more cooked grains and cotton and to further increase the yield of grain and cotton in the cotton region, we studied the productivity of several different cooked crops from 1987 to 1988 on our farm.