论文部分内容阅读
本文重点介绍了通过土壤养分速测的方法,以玉米为目标作物,以通榆市为例,根据作物需要量和土壤供肥量之差计算实现计划产量的施肥量,利用养分平衡法计算吉林省西部土壤养分条件下测土配方的施肥量,并且探讨了测土配方施肥的效益。结果表明:测土配方施肥技术可应地制宜的调整氮、磷、钾肥的用量,提高玉米产量的同时减少浪费和污染,达到了玉米增产、节本、增效以及提高肥料的利用率的目的。
In this paper, the method of rapid soil nutrient testing was introduced. Corn was the target crop. Taking Tongyu City as an example, the amount of fertilizer required to achieve planned yield was calculated according to the difference between crop requirement and soil available fertilizer. The nutrient balance method was used to calculate the yield of Jilin The amount of soil testing formula under the condition of soil nutrient in the western part of China was studied, and the benefit of soil testing and formula fertilization was discussed. The results showed that the soil testing and formula fertilization techniques could adjust the dosage of N, P and K fertilizers appropriately, increase the yield of maize, reduce the waste and pollution, and achieve the increase of maize yield, cost saving, efficiency increase and fertilizer utilization efficiency purpose.