1979年以来我们在平坝县建立黄壤综合利用改良基点,摸索黄泥田土的生物改良途径。其中黄泥土在秋收作物中利用玉米间(套)豆类、薯类与绿肥是生物改良(或耕作改良)的手段之一。因为这样有利于在增产粮食的同时增加经济收入与提高土壤肥力,并为广大社员所接受。其原因是我省早土栽培有不少是种类繁多的间(套)方式。在此基础上利用间(套)方式,并使之更加合理。同时在豆科作物中的花生是良好的黄壤先锋作物,经济价值较高。1980—81年在基点进行了玉米间作花生试验。试验地的土壤分析结果如表1。 由于这两年均遇到不正常天气:80年雨水过多,气温偏低;81年特大旱灾,均影响作物正常生长。 Since 1979, we have set up a base for improving the comprehensive utilization of yellow soil in Pingba County to explore ways to improve the soil of the yellow muddy soil. Among them, yellow soil uses corn (set) of beans in autumn harvest crops, and potato and green manure are one of the means for biological improvement (or cultivation improvement). Because this will help to increase grain yield while increasing economic income and increasing soil fertility, and accepted by the majority of members. The reason is that many of our province early soil cultivation is a wide range of (sets) way. On this basis, use between (sets) way, and to make it more reasonable. At the same time, peanuts in leguminous crops are good pioneers of yellow soil with high economic value. Peanut intercropping trials were conducted at the base during 1980-81. The results of soil analysis in the experimental area are shown in Table 1. Due to abnormal weather in these two years, there were too many rainstorms in 80 years and the temperature was low. The 81-year severe drought affected the normal crop growth.