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为了探讨钾肥对棉花生育的影响和增产效果,我所从1974年开始进行棉田钾肥肥效试验。通过试验证明,缺钾的土壤施用钾肥,无论是作基肥或当家肥,对棉花都有不同程度的增产效果。钾肥能促进棉花生育,对壮苗壮根促早发,增强棉苗素质,增加有效果枝,提高结铃率,提高棉花品质,防止早衰,减少红叶茎枯病的发生都有很好的作用。一、因地制宜,经济合理施用钾肥钾是棉花生长发育中必不可少的主要元素之一。土壤中缺钾量越大,使用钾肥的增产效果越显著。因此,如何因地制宜、经济有效、合理施用钾肥,应从两方面考虑:1、根据土壤含钾量和满足棉花高产对钾肥的需要定量施钾。根据全国棉花会议综合各地试验研究结果,亩产百斤皮棉,实际吸收氮15斤、磷6
In order to explore the effect of potash fertilizer on the growth of cotton and the effect of increasing yield, we started to test the effect of potash fertilizer on cotton field from 1974. The experiment proved that the potassium-deficient soil application of potassium fertilizer, whether as a base fertilizer or as a manure, have different levels of cotton yield. Potassium fertilizer can promote the growth of cotton and promote the early growth of strong seedlings and strong roots, enhance the quality of cotton seedlings, increase the effective fruiting branches, increase the boll establishment rate, improve the cotton quality, prevent premature aging and reduce the incidence of leaf blight. First, according to local conditions, economic and rational use of potassium Potassium is one of the essential elements of cotton growth and development. The greater the amount of potassium deficiency in the soil, the more obvious the effect of increasing yield with potash fertilizer. Therefore, how to adapt to local conditions, cost-effective and rational use of potash fertilizer, should be considered from two aspects: 1, according to the amount of potassium in the soil and meet the high yield of cotton on the need for potassium fertilizer quantitative potassium. According to the National Cotton Conference, a comprehensive study of the results of the test, per mu lint lint, the actual absorption of nitrogen 15 pounds, phosphorus 6