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黑龙港流域适宜发展棉花生产。担由于旱、薄、涝、碱,棉花、产量低而不稳。据调查,瘠薄棉田占棉田面积的70%以上,多数棉田氮磷齐缺。地薄又加重了旱碱的危害。1982年我们在坝县马坊大队千亩棉田进行增磷补氮的试验和示范,1983年在大城和坝县的薄碱地上试验,探讨氮磷化肥的合理配比指标。现将两年的试验结果,综合简报如下:
Heilongjiang River Basin suitable for the development of cotton production. Drought due to drought, thin, floods, alkali, cotton, low yield and instability. According to the survey, infertile cotton fields account for more than 70% of the area of cotton fields, and most cotton fields are deficient in nitrogen and phosphorus. Ground and aggravate the harm of auric. In 1982, we carried out experiments and demonstrations of nitrogen and phosphorus uptake in the mu area of Mafang Brigade in Dam County. In 1983, we experimented on thin alkali soil in the cities of Ayutthaya and Basa, and discussed the reasonable ratio of nitrogen and phosphorus fertilizers. Now two years of test results, integrated briefings are as follows: