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施用磷肥能提高地温,促进幼苗发育,加速根系生长,是盐碱稻区水稻增产的一项有效措施。施用磷肥增产显著,但磷肥肥效能持续多久,每次用量多少合适,是涉及降低生产成本和有效利用磷肥的一个现实问题。为此,我们在一九七五、一九七六年连续两年做了试验。试验证明,磷肥可以隔年轮施,一次用量不宜过多。现把试验情况简介如下:一、试验处理:
Application of phosphate fertilizer can increase ground temperature, promote seedling development and accelerate root growth, which is an effective measure to increase yield of rice in saline-alkali rice area. The application of phosphate fertilizer increased significantly, but how long the phosphate fertilizer efficiency, the amount of each appropriate amount is involved in reducing production costs and the effective use of phosphate fertilizer is a real problem. For this reason, we did the experiment for two consecutive years in 1975 and 1976. Test proved that phosphate fertilizer can be applied every other year, an amount should not be too much. Brief introduction of the test is as follows: First, the test treatment: