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科学用肥,是实现小麦高产稳产低成本的重要手段。掌握小麦的需肥量,可为科学用肥提供理论依据。但是,影响需肥量的因素很多,并且肥料用量增多后产量也不一定相应地提高。针对这个问题,我们在轻壤土上,以亩施过磷酸钙100斤和土粪10,000斤的相等条件下,进行了两年蚰包小麦不同氮肥施用量试验,现将结果简介如下。
Scientific use of fertilizer is an important means to achieve high yield and low cost of wheat. Grasping the amount of fertilizer needed for wheat can provide a theoretical basis for scientific use of fertilizer. However, there are many factors affecting the amount of fertilizer needed, and the output of fertilizers may not necessarily increase accordingly. In response to this problem, we conducted a two-year experiment on the application of nitrogen fertilizer in wheat for two years under the same conditions of 100 kg of phosphate per mu and 10,000 kg of soil on a light-loam soil. The results are summarized as follows.