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1983年秋我县建立了7个土壤肥力监测点,分布在我县具有代表性的2个土类5个土种上,代表面积134万亩,占全县耕地面积80.6%。监测点轮作方式:水田是稻——麦或稻——麦——绿,旱田是棉——麦或棉——麦——绿等,常年生产水平属于中等。建点后,我们在各个点设立了当季无肥区和常规施肥区,并进行有关项目考察记载,有些年份在某
In the autumn of 1983, we established 7 soil fertility monitoring stations in our county, which are distributed in 2 representative soil types and 5 soil types in our county, representing an area of 134 mu, accounting for 80.6% of the total cultivated area of the county. Monitoring points rotation mode: paddy rice - wheat or rice - wheat - green, dry field is cotton - wheat or cotton - wheat - green, perennial production levels are medium. After the establishment of the site, we set up the non-fertilizer area and the conventional fertilization area at various points and carried out the investigation and recording of the relevant projects.