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多熟制是实现粮食高产的重要途径。为探索平原多熟稻田实现高产水平的地力贡献特点和持续高产、稳产的土壤培肥技术,这对发展我市粮食高产、稳产和优化栽培可提供系列的科学依据。从1978年冬开始,进行了稻田多熟制土壤肥力平衡的定位试验,现将10年(1979～1988)的有关研究结果汇述如下:
Multi-cooked is an important way to achieve high yield of grain. In order to explore the contribution of topsoil contribution to high-yielding paddy fields in the plains and the soil fertility-maintaining techniques of continuous high yield and stable yield, this series of scientific evidences can provide a series of scientific basis for developing high yield, stable yield and optimized cultivation of grain in our city. Starting from the winter of 1978, a trial of locating fertility balance of multi-cropping paddy fields was carried out. The relevant research results of 10 years (1979 ~ 1988) are summarized as follows: