近几年我区化肥尤其是氮肥用量逐年增加,产量亦逐年提高。但也出现一些因施肥不当而减产的现象,造成高成本低收入。究其原因,可能是分配不合理以及施用过量所造成的。所以,研究不同土壤类型氮肥的效果以及适宜用量,做到合理分配、使用氮素化肥很有必要,现将试验结果汇总如下。 In recent years, the amount of fertilizer used in our region, especially nitrogen fertilizer, has been increasing year by year, and the output has been increasing year by year. However, there have also been some phenomena of reduced production due to improper fertilization, resulting in high cost and low income. The reason may be caused by the unreasonable distribution and overdosage. Therefore, the study of the effect of different types of soil nitrogen and the appropriate amount of fertilizer to achieve rational distribution, the use of nitrogen fertilizer is necessary, the test results are summarized below.