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生产实践证明,小麦施用磷肥增产显著。但要做到低成本、高效益,经济施肥,还应该注意以下几点: 一、配方施用。磷肥不足,小麦生长发育不良;若磷肥施用过多,则适得其反。这就要求配方施肥。就要根据土壤养分的丰欠程度,供给养分能力的大小,作物计划产量的高低,肥料品种及利用率,科学地、合理地搭配三要素及微量元素肥料,消除或降低最小养分的影响,充分发挥磷肥的增产效果。据测定,每生产100公斤小麦籽粒,其植株要吸收氮2.47公斤,磷0.39公斤,钾3.04公斤。以此为依据,结合土壤养分测定结果及计划产量,合理搭配各种肥料,可使各种营养元素相互协调,最大限度地发挥肥
Production practice has proved that the use of phosphate fertilizer yield significantly. However, to achieve low cost, high efficiency, economic fertilization, should also pay attention to the following points: First, the formulation application. Phosphate deficiency, poor growth and development of wheat; if too much phosphate fertilizer, it is counterproductive. This requires formula fertilization. It is necessary to eliminate or reduce the impact of the minimum nutrients according to the degree of abundance of soil nutrients, the size of the ability to supply nutrients, the level of crop yield, fertilizer varieties and utilization rate, scientifically and reasonably with three elements and trace element fertilizers Play phosphate fertilizer yield. It has been determined that for every 100 kilograms of wheat grain produced, the plant has to absorb 2.47 kilograms of nitrogen, 0.39 kilograms of phosphorus and 3.04 kilograms of potassium. Based on this, combined with the determination of soil nutrients and the planned output, with a reasonable variety of fertilizers, all kinds of nutrients can be coordinated with each other to maximize fertilizer