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钾肥是作物生长发育的三要素之一。过去对氮素和磷素肥料在生产中的增产效益研究较多,而对钾肥研究较少。为了探讨杂交水稻高产、稳产的土肥条件,经省农科院土肥所安排,于1979—1980年在我省主要水稻产区的罗山县农场布置了杂交水稻钾肥肥效试验,其中1980年因雨涝试验天折,现将1979年的试验效果简结如下:
Potash is one of the three elements of crop growth and development. In the past, more research was done on the yield-increasing benefits of nitrogen and phosphorus fertilizers in production, while less on potash fertilizers. In order to investigate the conditions of high yielding and stable soil fertility of hybrid rice, the fertilization experiment of hybrid rice potash fertilizer was arranged in the Luoshan County farm in the main rice producing area of our province from 1979 to 1980, Waterlogging test day off, now the test results in 1979 is summarized as follows: