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随着复种指数的增加,以及单位面积产量的提高,土壤钾的消耗较多,钾肥在生产上的效果已逐渐显示出来.通过土壤普查,发现不同类型土壤有不同程度的缺钾现象.因此,针对不同类型稻田土壤的含钾状况,来合理施用钾肥,是提高钾肥效果的重要措施.一、土壤钾素状况土壤中的钾素含量,与成土母质中矿物组成的含钾量有密切关系,也与施肥、耕作等农业措施有关.一般土壤不缺钾,但是,在轮作、耕作和施肥等措施的影响下,土壤里的含钾量会发生很大变化.根据全
With the increase of multiple cropping index index and the increase of yield per unit area, the potassium consumption in soil is high, and the effect of potash fertilizer on production has gradually been revealed.According to the soil survey, different types of soils have different degrees of potassium deficiency.Therefore, In view of the different types of paddy soil potassium status, to rational use of potassium fertilizer, is an important measure to improve the effect of potassium.A soil potassium status of soil potassium content, and soil composition of the parent material in the mineral composition of potassium content is closely related , But also with agricultural measures such as fertilization and tillage.General soil does not lack potassium, however, under the influence of rotation, tillage and fertilization, the amount of potassium in soil will change greatly.According to the whole