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在棉花生长后期,根系对养分的吸收功能明显减退,这时进行叶面喷肥有明显的增产作用。 一、喷氮防早衰 在8月下旬至9月上旬,叶面喷施氮肥,可使棉叶保持绿色,光合作用增强,防止早衰,提高产量。喷肥方法:配制1％的尿素溶液,667平方米喷液75～
In the later stage of cotton growth, the nutrient absorption capacity of the root decreased obviously. At this time, the effect of foliar spray fertilization was obvious. First, anti-premature decay of nitrogen in late August to early September, foliar application of nitrogen fertilizer, cotton leaves can be kept green, photosynthesis increased to prevent premature aging and increase production. Spraying method: preparation of 1% urea solution, 667 square meters of spray 75 ~