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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,以蛟河市为例,得出吉林省东部区域的氮磷钾的速测值(X)与常规测量值(Y)之间的回归曲线,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东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。
This paper focuses on the rapid measurement of soil nutrients by using corn as the target crop. Taking Jiaohe City as an example, we obtained the measured values of nitrogen, phosphorus and potassium in the eastern Jilin Province (X) and the conventional measurements (Y) According to the regression curve, the amount of fertilizer to achieve planned yield was calculated based on the difference between the crop requirement and the amount of soil available fertilizer. The amount of fertilizer applied to soil testing under the condition of soil nutrient in eastern Jilin Province was calculated by using nutrient balance method. Benefit. The results showed that the soil testing and fertilizer technology can adjust the dosage of nitrogen, phosphorus and potassium fertilizer appropriately, increase the yield of maize, reduce the waste and pollution, and achieve the goal of increasing yield, saving cost, increasing efficiency and increasing the utilization of fertilizer. .