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氮肥是施入棉田中的主要肥料,它与棉花纤维品质的优劣密切相关。由于纤维品质直接涉及到棉农投入田间肥料的经济效益,为此,我们于1985～1988年,通过多种施肥方法试验,以寻求氮肥与品质的关系,给优质棉生产提供依据。 1.施用氮肥的数量、时期与棉花品质 施入土壤中氮肥数量的多少,对棉花营养生长与生殖生长协调发育有一定的影响,从而直接影响到棉花纤维品质。若氮素供应过多,易引起枝叶旺长,田间荫蔽,往往导致纤维品质向劣质化转变。
Nitrogen fertilizer is the main fertilizer applied to cotton fields, which is closely related to the quality of cotton fiber. Because of the direct impact of the fiber quality on the economic efficiency of cotton farmers in field fertilizers, we tested the relationship between nitrogen fertilizers and quality through a variety of fertilization methods from 1985 to 1988 to provide the basis for high-quality cotton production. 1. The amount of nitrogen application, the period and the quality of cotton applied to the soil, the amount of nitrogen fertilizer on the coordinated development of vegetative and reproductive growth have a certain impact, which directly affects the cotton fiber quality. If the nitrogen supply too much, easy to cause the branches and leaves to grow long, shade the field, often lead to changes in fiber quality to inferior quality.