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(一) 东沟稻区地处黄海之滨,年平均气温8.4℃,大于和等于10℃的活动积温3,279.9,年平均无霜期165.5天,年平均降水量964.5毫米。有大中小型水库42座,常年贮水量3亿立方米左右,水利工程配套齐全。稻田平均有机质含量2.7％,全氮含量0.156％。可谓气候温和,雨量充沛,水源方便,土质肥沃。与省内其它稻区相比,堪称得天独厚。全县有水田68万亩,是省内水田面积最大的县,也是种稻历史悠久的老稻区。七十年代以前,东沟
(1) The Donggou rice area is located on the coast of the Yellow Sea with an annual average temperature of 8.4 ℃ and an accumulated accumulated temperature of 3,279.9 times greater than and equal to 10 ℃. The annual average frost-free period is 165.5 days with an average annual rainfall of 964.5 millimeters. There are 42 large, medium and large reservoirs, perennial reservoir capacity of 300 million cubic meters, water conservancy projects complete. The average organic matter content of paddy fields was 2.7% and the total nitrogen content was 0.156%. Can be described as mild climate, abundant rainfall, convenient water, fertile soil. Compared with other rice areas in the province, it is unique. The county has 680000 acres of paddy fields, is the largest paddy field in the province, but also a long history of paddy rice area. Before the seventies, Donggou