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先后通过对中牟潮土、镇平砂姜黑土、许昌褐土3个土类进行田间小区试验,系统地研究了6种钾素水平对强筋小麦群体动态、产量及产量因子的影响。结果表明:三类土壤上适量施钾,可有效提高强筋小麦越冬群体、最高群体和有效群体。多点钾肥试验结果表明:钾肥主要通过增加千粒重显示其肥力效应。增产幅度一般在10%左右。在氮磷充足的前提下,小麦对钾的吸收存在着“奢侈吸收”现象。
Field experiment was conducted on three soils of Zhongmou tide soil, Zhenping lime concretion soil and Xuchang cinnamon soil to systematically study the effects of six K levels on population dynamics, yield and yield factors of strong gluten wheat. The results showed that applying proper amount of potassium on three soils could effectively increase the overwintering, the highest and the effective population of strong gluten wheat. The results of multi-point potash experiment showed that potassium fertilizer showed its fertility effect mainly by increasing 1000-grain weight. Increase the production rate is generally around 10%. In the premise of adequate nitrogen and phosphorus, the absorption of potassium in wheat there is “luxury absorption ” phenomenon.