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以生产上大面积推广应用的‘鲁棉研28号’为试材,探讨年际间气象因子变化对棉花产量的影响。结果表明,年际间棉花生育期内的积温变化不显著,日照时数间的变异系数为7.4%,降水量的变异系数达到18.4%;日照时数与籽棉产量、霜前籽棉产量、皮棉产量呈正相关;降水量与籽棉产量、霜前籽棉产量、皮棉产量呈负相关,均达到显著水平,表明降水量是影响棉花产量因素的关键气象条件。
In the production of a large area of popularization and application of ’cotton 20’ as a test material to explore the inter-annual changes in meteorological factors on the impact of cotton production. The results showed that the accumulated temperature did not change significantly during the cotton growing period, the coefficient of variation was 7.4% and the coefficient of variation of precipitation was 18.4% during sunshine hours. The sunshine duration, seed cotton yield, pre-frost seed cotton yield, lint yield There was a positive correlation between the precipitation and the seed cotton yield, the seed cotton yield before the frost and the lint yield, all reaching the significant level, indicating that the precipitation is the key meteorological condition affecting the cotton yield.