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长期以来,一般认为四川秋雨多,收天不好,在很大程度上决定了棉花的产量。1980年全省棉花大减产后,笔者察觉8月份气候对产量有重要影响,于是将已往的试验重新统计分析,果然得出8月份的气候才是形成产量带决定性的因素。 1961—1966年我所作了肥料定位试验,6年中小区位置不变,同一小区每年施肥和栽培技术也完全一样,按理各年小区产量应该一致,但实际差异很大。
For a long time, it is generally believed that many autumn rains in Sichuan are not well received and largely determine the output of cotton. After the cotton cut in 1980 in the province, the author noticed that the climate in August had an important influence on the output. Therefore, the statistical analysis of the previous experiments reckoned that the climate in August was the decisive factor in the formation of output. From 1961 to 1966, I made a fertilizer positioning experiment. In the past 6 years, the position of small and medium-sized residential communities remained unchanged. The same fertilization and cultivation techniques were exactly the same in the same plot. According to the statistics, the output of small and medium-sized communities should be the same in each year, but the actual difference is very large.