不同土壤、作物施钾效果初报

本文总结了1989和1990两年內在山西省中、北部进行的钾肥肥效试验结果。大豆在怀仁试点、棉花在太谷试点、大白菜在太原南郊试点和孝义试点及茴子白在太原南郊试点施钾都有不同程度的增产效果。进一步分析其增产效益得出,除怀仁试点大豆施钾亩增纯收入不大外,其余施钾增产效益特别明显,施钾亩增纯收入达30—200余元。同时施钾还能显著地提高大白菜和茴子白的抗病能力。而大豆在忻州试点及棉花和玉米在孝义试点施钾增产效果不显著。

A PRELIMINARY STUDY OF POTASH FERTILIZER EFFECTS ON SOME SOILS AND CROPS

The experiment was conducted on some soils and crops in the central and northern parts of Shanxi province in 1989 and 1990. The result showed that, except that the effect of increase production of potash fertilizer on soybean (Glycine Max (L.) Merr.) in Xinzhou and on cotton (Gossypium hirsutum L.) and maize (Zea mays L.) in Xiaoyi was not significant,the effects of increase production of potash fertilizer on soybean in Huairen, on cotton in Taigu, on Chinese cabbage (Brassica Pekinensis) in Xiaoyi, and on Chinese cabbage and cabbage (Brassica Pekinensis) in Xialyi and on Chinese cabbage and cabbage (Brassica oleracea var. Capitata L.) in the southern suburbs of Taiyuan were all significant or very significant. And further more, except soybean in Huairen, the benefits, of increase production of potash fertilizer on cotton in Taigu, on Chinese cabbage in Xiaoyi and on Chinese cabbage and cabbage in the southern suburbs of Taiyuan were very clear and the net income per mu increased from 30 to 200 yuan with potash fertilizer v. s. the contrast. Meanwhile, potash fertilizer increased significanthy the disease—resistant ability of cabbage and Chinese cabbage.