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商丘地区常年种植冬小麦800万亩左右,是黄淮海平原主要产麦区之一。因受自然气候生态条件影响,小麦产量低而不稳,年际间波动较大。为此,我们于1981～1986年,对本区光、热、水分布与冬小麦生态、产量之间的关系进行了研究。该研究以分期播种为主要方法,从9月25日开始,每隔5天播一期,到11月9日止,共设11个处理,并以9月30日为早播、10月10日为中播、10月30日为晚播。根据三年多点播期试验和气象平行观测
Shangqiu area perennial planting about 8000000 acres of winter wheat, is the Huang-Huai-Hai Plain, one of the main producing areas. Due to the natural climatic and ecological conditions, wheat yield is low and unstable, fluctuating greatly during the year. To this end, we conducted a study on the relationship between light, heat and water distribution and the ecological and yield of winter wheat in 1981-1986. The study is based on staged seeding as the main method, starting from September 25, every 5 days broadcast until November 9, a total of 11 treatments, and September 30 for the early broadcast, October 10 Day for the broadcast, October 30 for the evening. According to more than three years of sowing date test and meteorological parallel observations