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在半干旱地区(长治襄垣县),使用中单2号玉米品种,三年平均膜侧种植晚期播种比正常播期下膜内种植和露地种植亩增产155.2kg和199.6kg,增产率为30.8％和43.5％。究其原因,一是增温缓温;二是增墒节墒;三是适时晚播有利于促进光合产物的合成与积累。
In the semi-arid area (Changzhi County Xiangyuan County), using Zhongdan No.2 maize varieties, the three-year average film-side planting seeding increased 155.2kg and 199.6kg compared with that under normal sowing date and the yield increasing rate was 30.8% And 43.5%. The reason, first, warming warming; Second, the moisture content of sowing; Third, timely late sowing is conducive to promoting the synthesis and accumulation of photosynthetic products.