近年来,随着三熟制面积的扩大,复种指数不断提高,缺肥量越来越大。但在实际施用中,有的生产队不注重化肥的施用方法,而造成肥分损失。为了探索化肥的合理施用方法,充分发挥化学肥料的应有作用,我们于去年对现有的几种化肥在晚稻田作了基肥深施的对比试验,现将试验结果小结如下: In recent years, with the expansion of the three-cropping system, the index of multiple cropping is continuously increasing, and the amount of missing fertility is increasing. However, in actual application, some production teams do not pay attention to the application of chemical fertilizers, resulting in loss of fat. In order to explore the rational application of fertilizers, give full play to the proper role of chemical fertilizers, we conducted in the last few years of the existing fertilizer in the late rice paddy deep application comparison test, the test results are summarized as follows: