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一、前言合理密植是棉花增产的中心环节。其能够增产,就在于合理解决个体和群体之间的矛盾,充分利用水、肥、土、温、光等自然条件;在保证群体充分发展的条件下,尽量满足个体正常生育的需要,使单位面积总铃数和铃重增加,从而提高产量。目前我省黄河流域棉区的密度是:一般肥沃地每亩在3000—4000株,而中等地在4000—6000
I. INTRODUCTION Reasonable and close planting is the key link of cotton yield increase. Its ability to increase output lies in the reasonable solution of the contradictions between individuals and groups, making full use of natural conditions such as water, fertilizer, soil, temperature and light. Under the conditions of ensuring the full development of the groups, it is necessary to meet the needs of individuals for normal reproduction as far as possible, The total area of the bell and boll weight increase, thereby increasing production. At present, the density of cotton area in the Yellow River Basin in our province is as follows: the average fertile area is 3000-4000 plants per mu, while the medium is between 4000-6000