ÃÞ »¨ ѧ ±¨ Cotton Science 2010£¬22£¨5£©£º466-470
Effect of Different Phosphorus Fertilizer Rate on Dry Matter Accumulation and the Absorption and Distribution of Nitrogen, Phosphorous, Potassium of Cotton Abstract: According to the field experiment, we studied the effect of different phosphorus fertilizer rate on dry matter accumulation, yield, absorption and distribution of nitrogen, phosphorous, potassium of cotton. Results suggested that increase the phosphorus fertilizer rate can enhance the dry matter accumulation, yield, absorption and distribution of nitrogen, phosphorous, and potassium of cotton, compared with the treatment of P0, but the more is not obviously, and there is a obviously significant improvement effect on dry matter accumulation, yield, accumulation of nitrogen, phosphorous, potassium of cotton while P2O5 was applied at 75 ¡« 150 kg¡¤hm-2. Compared with the treatment of P0, the average of dry matter accumulation, accumulation of nitrogen, phosphorous, and potassium of cotton in flower and boll stage increased by 24.6%,30.7%, 55.9%, 36.4%,respectively; the average of dry matter accumulation, yield, accumulation of nitrogen, phosphorous, and potassium of cotton in opening stage increased by 33.4%,39.9%,49.1%, 47.7%, 53.0%,respectively.
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