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钾素是农作物的主要营养元素之一.近年来,随着复种指数和产量的不断提高,作物从土壤中所摄取的养分也随之增加,但是由于氮、磷肥施用较多,而钾肥施用较少,土壤中所含的钾已不能满足作物高产的需要,而逐渐成为高产的限制因素,由缺钾引起的生理病害也逐渐增加.因此,钾肥的施用和研究,日益受到重视. 徽州地区的粮食作物主要是水稻.为此,我们自1976年以来对本地区不同母质、不同肥力水平的水稻土进行了水稻施用钾肥的试验、研究和示范.特别在试验中采用钾肥蘸秧根的施肥方法,获得了显著成效.现将试验的有关结果列述于次.
Potassium is one of the main nutrition elements of crops.In recent years, with the increase of multiple-cropping index and yield, the nutrient uptake of crops from the soil also increases, but because of the application of nitrogen and phosphate fertilizer more, less potassium contained in the soil can not meet the needs of high-yield crops, and gradually become the limiting factor in high yield, physiological diseases caused by a potassium deficiency is also increasing. Thus, administration and research potash, and more attention. Huizhou area the main crops are rice. to this end, we since 1976 on different parent materials, different fertility levels of paddy soils in this region were tested, research and demonstration administration rice potash. in particular the use of fertilization methods potash dip seedling roots in the experiment, Obtained significant results. The relevant results of the experiment are listed below.