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采用三种覆盖模式(二元覆盖模式、垄覆沟种模式、膜侧种植模式),研究了隰县试区旱塬地玉米同化产物积累及氮、磷、钾吸收、分配等问题。结果表明,以二元覆盖种植方式最好,其亩产量为602kg,比对照增产10.14%;同化产物(干物质)积累至9月2日总增重353.17g/株,比对照高39.5%;8月上旬叶面积最大,比对照高7.9%;灌浆期比对照提早7～8天,持续时间长7～8天;每一亩 N、P、K 吸收量分别为19.3kg、2.0kg、9.8kg。同时对叶面积增长与干物质和地上部与地下部消长相关性进行了探讨。
Three kinds of mulching patterns (dual mulching pattern, furrow furrow pattern and film planting pattern) were used to study the accumulation of assimilate products and the absorption and distribution of nitrogen, phosphorus and potassium in maize in the experimental highland in Puxian. The results showed that the planting method with dual coverage was the best with a yield of 602 kg per mu and a yield increase of 10.14% compared with the control. Assimilate (dry matter) accumulated to 353.17 g / plant on September 2, 39.5% higher than that of the control. The leaf area was the highest in early August, 7.9% higher than the control. The grain filling period was 7-8 days earlier than the control, and the duration was 7-8 days. The N, P and K uptake per mu was 19.3kg, 2.0kg and 9.8 kg. At the same time, the relationship between leaf area growth and dry matter and the growth and development of shoots and shoots were discussed.