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东沟稻区分布在鸭绿江口右岸和黄海北岸平原,面积占丹东地区稻田总面积的90％。与同纬度的其它稻区相比,东沟稻区冬暖夏凉,春冷秋热,致使东沟稻区夏季低温冷害特别严重。低温冷害的特点 1.水稻生长前期热量不足据对气象资料的记载与分析,我们发现影响产量因素中最大的是温度,其次是降水,再次是日照时数。假定每个月这三个因素的影响为100,那么,4～9月份各因素对产量影响
Donggou rice area is located in the right bank of the Yalu River estuary and the northern coast of Yellow Sea plain, accounting for 90% of the total area of paddy fields in Dandong. Compared with other rice fields at the same latitude, Donggou rice areas are warmer in summer, cooler in summer and cooler in autumn than in spring, causing severe summer cold damage in Donggou rice areas. The characteristics of chilling injury 1. Rice lack of heat early growth According to the meteorological data records and analysis, we found that the factors that affect the yield is the largest temperature, followed by precipitation, and then the sunshine hours. Assuming that the monthly impact of these three factors is 100, then the impact of various factors from April to September on production