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我县位于太湖以西,茅山以南,地形复杂,系半低山丘陵半圩乡地区,部分土壤养分贫瘠,且淀浆板结,历来以种植稻、麦为主,实行水稻、三麦、油菜、红花草轮作换茬制。随着耕作制度的改革,复种指数提高,近几年来冬绿肥面积大幅度缩减。据统计,从六十年代末的绿肥面积约占总耕地面积的34%以上,下降到1983年不足6%。由于优质有机肥料减少,氮
My county is located west of Taihu Lake, south of Maoshan, complex terrain, the Department of semi-hilly area half Wei Township, part of the barren soil nutrients, and the formation of slurry plate knot, has always been planted rice, wheat-based implementation of rice, wheat, rape, Safflower rotation crop system. With the reform of the tillage system and the improvement of the multiple cropping index, the area of winter green manure has been drastically reduced in recent years. According to statistics, the area of green manures from the late 1960s accounted for more than 34% of the total arable land and dropped to less than 6% in 1983. Due to the reduction of high-quality organic fertilizer, nitrogen