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一、问题的提出涪、沱江流域的绵阳、剑阁、梓潼、盐亭、三台、德阳、中江、金堂、射洪、蓬溪、遂宁、简阳、资阳、乐至、安岳、资中、内江、仁寿、井研等19县、市位于四川盆地的腹心地带,占有千万人、千万亩耕地,是我省粮经作物的主产区之一。该区生产水平较全省平均水平偏高,粮食播种面积占全省的18％,总产量占全省的18.9％。区域内土多田少,旱地占60％以上,其中“麦、玉、苕”旱三熟占旱地的60％。年际间小麦产量既稳且高,红苕产量亦较稳定,而玉米产量波动很大。据该区1979—1987年的9年间玉米总产统计,出现了3年增产,6年减产,且减产幅度较
First, the issue raised Fu, Tuojiang River Basin Mianyang, Jian Pavilion, Zitong, Yanting, Santai, Deyang, Zhongjiang, Jintang, Shehong, Pengxi, Suining, Jianyang, Ziyang, music to Anyue, capital, Neijiang, Renshou, Jing Yan and other 19 counties, the city is located in the belly heart of the Sichuan Basin, occupies 10 million people, 10 million mu of arable land, is one of the main grain-producing crops in our province. The production level in this area is higher than the average level in the province, with the sown area of grain accounting for 18% of the province’s total output and the total output accounting for 18.9% of the province’s total. In the area, there are a lot of soil and less fields, and the dry land accounts for more than 60%. Among them, “wheat, jade and razor clam” dry and dry are 60% of the dry land. During the inter-annual wheat production is both stable and high, yield of red croaker is also relatively stable, while the yield of corn fluctuates greatly. According to the 9-year gross maize output statistics of the area from 1979 to 1987, there has been a three-year yield increase and a six-year reduction in production,