灰漠土老菜地施用生物钾肥和化学钾肥的比较

Comparison of Biopotassium and Chemical Potassium Using in Grey Desert Vegetable Soil

在灰漠土老菜地上施用适量的生物钾肥和化学钾肥都可明显地促进作物的生长，增强抗病能力，提高番茄、辣椒、黄瓜的产量（特别是早期产量），维持或提高土壤中Ｋ和Ｐ的含量。但施生物钾肥成本低，不破坏土壤结构。

Grey desert soil has rich total potassium,but is short of available potassium. Using biopotassium and chemical potassium in grey desert vegetable soil can evidently promote growth enhance the ability of disease resistance increase early yield and total yield of vegetable crops and maintain or raise available P and K in soil. And application of biopotassium has several advantages such as low cost and no destroying of soil stracture as compared with chemical potassium.