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秧田施用磷肥是一种省工、省肥、简便易行的施磷方法,近年来,我区水稻施用磷肥(普通过磷酸钙,下同)面积迅速扩大,但对秧田施用磷肥还未引起充分注意。其原因,多考虑到秧苗生长期较短,施磷效果不大;酸性磷肥可能影响嫩芽幼苗生长;又认为一般秧田土壤肥力较高,施肥量也较大,施磷效果不会显著。因此我们于1963和1964年连续两年,分别在上等和下等肥力的黄红壤稻田,进行了秧田施用磷肥的试验,现将试验结果总结如下。
In recent years, the area of paddy field applying phosphate fertilizer is a province-saving, fertilizer-saving and easy-to-use method for phosphorus application. In recent years, the area of paddy field applying phosphate fertilizer (ordinary superphosphate) has rapidly expanded, but the application of phosphate fertilizer to seedling has not yet caused sufficient note. The reason for this is that more consideration should be given to the fact that the growth period of seedlings is shorter and the effect of applying phosphorus is not significant. Acidic phosphate fertilizer may affect the growth of tender shoot seedlings. In addition, it is considered that soil fertility is generally higher in seedling fields and the amount of fertilization is also larger. Therefore, in 1963 and 1964 for two consecutive years, respectively, in the upper and lower fertility of yellow-red paddy fields, the trial of phosphorus fertilizer applied to seedlings, the test results are summarized below.