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杭嘉湖平原是我国提供商品粮的生产基地之一。随着多熟制的发展和施肥量的增加,对该地区的粮食增产是起了较大的作用。但是,多熟制发展后,土壤浸水时间延长,干耕晒垡的机会减少,土壤出现粘闭、起浆、僵硬,水气矛盾突出。近几年来,农村肥料结构发生了变化,化肥用量愈来愈大,而有机肥的比重日益减少。据嘉兴、海盐、海宁、桐乡和长兴等县
Hangzhou-Jiaxing-Huzhou Plain is one of the production bases for providing grain products in China. With the development of multi-cropping system and the increase of fertilizer application, it has played a greater role in grain yield increase in this area. However, after the development of multi-cropping, soil immersion time is prolonged, dry-tilling sunning opportunities are reduced, soils appear to be clogged, pulpy and stiff, with prominent water and gas conflicts. In recent years, the structure of rural fertilizer has undergone changes, the use of chemical fertilizers is increasing, and the proportion of organic fertilizers is decreasing day by day. According to Jiaxing, Haiyan, Haining, Tongxiang and Changxing counties