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稻田复种轮作制研究,是根据我省人多耕地少,光热水资源丰富,四季可种植的特点,以期探索一套作物产量高、经济效益大、养地效果好的科学合理耕作制度,应用于生产,促进农业发展。该项研究经过1979年冬至1982年冬3年9熟的定位试验和有关分析测定,取得较好的预期效果。一、试验设计根据我省较普遍的8种复种方式,设计4个3年复种轮作制组合(每个组合3个区)和3个复种方式连作对照。在中等田(土壤有机质含量1.659％,全氮0.0845％,双季稻常年亩产1200—1300斤)采用中等施肥水平种植。试验地设在本所试验场。按照设计处理,田间划分为15个试区,每区面积0.2亩,顺序排
The research on cropping system of cropping multiple cropping system is based on the characteristics of less cultivated land, abundant solar energy, hot and cold water and four seasons planting in our province, in order to explore a scientific and reasonable farming system with high crop yield, large economic benefit and good raising effect. In the production, promote agricultural development. The study after 1937 winter to winter 1982 3 years 9 cooked positioning test and related analysis and determination, and achieved better expected results. First, the experimental design According to the province’s more common 8 kinds of multiple cropping methods, design 4 three-year multiple cropping system combination (each combination of three areas) and three methods of multiple cropping control. Middle-level fields (soil organic matter content 1.659%, total nitrogen 0.0845%, double-cropping rice 1200-1300 pounds per mu) were moderately fertilized. Experimental site located in the test site. In accordance with the design and processing, the field is divided into 15 test areas, each area of 0.2 acres, the order row