【摘 要】
:
随着苏南农村劳力的转移,有机肥的积造与施用面积越来越少。以无锡市为例,1984年秋播时有64.9%的面积施用猪灰,亩施量11.6担。三年后秋播时有机肥施用面积降至45.9%,亩施量也降
【机 构】
:
江苏省农科院现代化所,无锡县农业局土肥站
论文部分内容阅读
随着苏南农村劳力的转移,有机肥的积造与施用面积越来越少。以无锡市为例,1984年秋播时有64.9%的面积施用猪灰,亩施量11.6担。三年后秋播时有机肥施用面积降至45.9%,亩施量也降低至9.3担,有机肥减少造成土壤有机质含量下降。据无锡县多点抽样调查,1984年土壤有机质含量平均为2.45%,较1979年降低0.13%。吴江、吴县等县也都有土壤有机质含量呈下降趋势的报道。近年来,这一问题以逐渐被人们所认识,並大力开展了秸秆还田的尝试。
With the transfer of labor force in rural areas of southern Jiangsu, organic fertilizer has accumulated less and less area for application. Take Wuxi as an example. In the autumn of 1984, 64.9% of the area was covered with pigskin and the amount of mu was 11.6 tons. Three years later, the area of organic fertilizer application decreased to 45.9% in autumn and the amount of mung was reduced to 9.3%. The decrease of organic manure resulted in the decrease of soil organic matter content. According to the multi-point sampling survey in Wuxi County, in 1984 the average content of soil organic matter was 2.45%, down 0.13% from 1979. Wujiang County, Wu County and other counties also have reported a downward trend in soil organic matter. In recent years, this problem has gradually been recognized by people and vigorous efforts have been made to return straw to soil.
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