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通过试验和统计分析， 揭示了黑体效应 （地膜内撒草木灰） 使棉花苗期日平均地温显著提高（较地膜覆盖）， 其中０ ｃｍ 提高０．８２～０．９７℃， １０ ｃｍ 提高１．０～１．５０℃， ２０ ｃｍ 提高０．９９～１．０１℃；在棉花生长初期４１ ｄ 中，较地膜棉增加０ ｃｍ 地积温３３．３℃．ｄ，１０ ｃｍ 地积温４７．７ ℃． ｄ，２０ｃｍ 地积温４０．９ ℃． ｄ； 较地膜覆盖补偿气积温３８．９℃． ｄ， 使棉花生育期较地膜棉提早３～４ ｄ。从而使棉花生育的优势部位与气候资源优势时段同步， 趋利避害， 促进了棉花的优质高产。
Through the experiment and statistical analysis, it was revealed that the blackbody effect (mulching with ash in the mulching film) significantly increased the average daily temperature of cotton seedling (compared with the mulching), in which the 0 cm increased by 0.82-0.97 ℃ and the 10 cm increased by 1.0 ~ 1.50 ℃, 20 cm increased by 0.99 ~ 1.01 ℃; in the first 41 days of cotton growth, compared with the film cotton increased 0 cm accumulated temperature 33.3 ℃. d, 10 cm temperature of 47.7 ℃. d, 20cm accumulated temperature 40.9 ℃. d; than the film cover compensation gas accumulated temperature 38.9 ℃. d, the cotton growth period than the cotton film 3 ~ 4 d earlier. So that the dominant position of cotton growth and climate resources are synchronized with the advantages of time, profit and avoid disadvantages, and promote high-quality cotton yield.