黑龙江省水稻种植面积现已超过87万公顷。由于种植水稻可以获得较高的经济效益,所以农民在施肥投入上往往高于其它作物。试验结果表明,肓目地投入氮肥,不仅降低水稻的产量和品质,而且降低氮肥利用率,造成经济损失。采取如下措施,可提高水稻氮肥利用率。一、根据不同土壤类型确定氮磷比例及 Rice planting area in Heilongjiang Province now exceeds 870,000 hectares. Farmers are often more willing to invest in fertilizers than other crops due to the higher economic benefits of growing rice. The test results show that the Nanguang injection of nitrogen, not only reduce the yield and quality of rice, but also reduce the utilization of nitrogen, resulting in economic losses. Take the following measures to increase nitrogen use efficiency of rice. First, according to different types of soil to determine the proportion of nitrogen and phosphorus