论文部分内容阅读
棉花滴灌专用肥是基于绿洲干旱区域滴灌施肥和棉花需肥特点研发的新型复合肥。通过田间试验,对比研究了滴灌专用肥与常规肥的不同养分在土壤中的运移特点及滴灌棉花的养分利用率。结果表明:在膜下滴施条件下,滴灌专用肥的氮、磷、钾养分在土壤中的移动性强于常规肥,养分在土层中的分布与棉花根系分布特点吻合度好,促进了棉花根系养分吸收,提高了养分利用率;棉花滴灌专用肥氮、磷、钾的生理利用效率较常规肥分别提高了3.62%、4.18%和1.45%,农学利用率较常规肥分别提高了29.37%、29.2%和29.38%;在等养分条件下,滴施专用肥增产籽棉6.9%。
Cotton drip irrigation special fertilizer is based on oasis arid area drip fertilization and cotton fertilizer characteristics developed by a new type of compound fertilizer. Field experiments were conducted to study the characteristics of different nutrients in drip irrigation special fertilizers and conventional fertilizers in soil and the nutrient utilization efficiency of drip irrigation cotton. The results showed that under drip irrigation conditions, N, P and K nutrients of drip irrigation special fertilizer had stronger mobility in the soil than conventional fertilizers, the distribution of nutrients in the soil layer was in good agreement with the cotton root distribution characteristics, promoted Compared with the conventional fertilizers, the physiological utilization efficiencies of nitrogen, phosphorus and potassium for cotton drip irrigation increased by 3.62%, 4.18% and 1.45%, respectively, and the utilization rate of agronomy increased by 29.37% , 29.2% and 29.38%, respectively; Under the condition of equal nutrients, special fertilizers were applied to increase 6.9% of seed cotton.