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江西乐丰良种场位于鄱阳湖滨,是我省商品粮基地之一。自一九五四年建场以来,为解决圩区洪涝灾害和农田灌溉用水,修建了水库、塘坝、机电排灌和圩堤工程,基本上控制了圩内一般性水旱灾害,实现水利化。全场现有有效灌溉面积21000亩,占总耕地90%。1980年全场粮食总产量(以稻谷为主)为2022万斤,平均亩产1080斤,达到我省较高的产量水平。从分析我场1954——1980年26年的气象和粮食产量统计资料来看(如表1),五十年代,水利灌溉条件差,旱涝保收面积不到2000亩,二个多水年(年降雨量超过1700毫米,下同)都增产,二个少水年(年降雨量不到1500毫米,下同)都减产,即多水年增
Jiangxi Lefeng good seed market is located in Poyang Lake, is one of our province commodity grain base. Since the establishment of the site in 1954, reservoirs, ponds, electromechanical drainage and dykes have been constructed to address the flood disasters and irrigated farmland in the polder areas, basically controlling floods and droughts in the polders and realizing water conservancy. The existing effective irrigation area of 21000 acres, accounting for 90% of the total arable land. The total grain output in 1980 (mainly paddy) was 20.22 million kg, with an average yield of 1,080 catties, achieving a high output level in our province. From the analysis of the statistics of meteorological and food production from 1954 to 1980 in our field (Table 1), in the 1950s, the conditions of irrigation were poor, the area covered by drought and flood was less than 2000 mu, and the period of more than two years of water The amount of more than 1700 mm, the same below) are increasing production, two less water years (annual rainfall of less than 1500 mm, the same below) are cut, that is,