南通气象因素对棉花产量及其构成因子的影响

The Effect of Meteorological Elements in Nantong on Cotton Yield and Its Component Factors

为了研究南通气象因素对棉花产量及其构成因素的影响,采用2009年南通棉花品种区域试验的资料,分析3个试点的棉花产量及其构成因子与气象因素的相关性。结果表明:各生育期的平均温度及整个生育期温度与籽棉产量、单铃重有极显著相关,在棉花的整个生育期中在适宜的温度范围内,温度越高,棉花的产量越高。适宜的水分是棉花生长的重要条件之一,降水量过多过少都会对棉花的生长造成不利的影响。花铃期的降雨量与皮棉产量有极显著负相关。花铃期降水量越多,则棉花的产量越低,这是因为雨水过多棉花脱落增加,结铃数下降所致。各生育期及整个生育期的日照时数与棉花籽棉产量、单铃重有极显著的正相关,花铃期的日照时数与皮棉产量有显著的正相关。总之,南通气象条件与棉花产量存在相关性,研究表明光照是影响南通棉花产量的关键因子。

In order to study meteorological factors on cotton yield and its composition factors in Nantong, the author used the information of regional cotton variety test in Nantong in 2009, analyzed cotton yield and component factors associated with meteorological factors in the three pilot. The results showed that： it had significant correlation between the average temperature in the growth period and seed cotton yield, boll weight. In the whole growth period of cotton, with the higher the temperature and the higher the yield of cotton in the appropriate temperature range, it was one of the important factors about appropriate water in the cotton growth. It had adverse affects in the cotton growth if the precipitation would be too much or too little. There was a significant negative correlation between the precipitation in boll stage and lint yield. More rainfall during the blooming period, the lower the yield of cotton, it was because too much rain falling result to increase take off the cotton, and decrease in the number of bolls. It had significant positive correlation between sunshine hours and cotton lint yield, boll weight. In the blooming period, it had significant positive correlation between sunshine hours and lint yield. In short, weather conditions in Nantong correlated with cotton production, and light was affecting the key factor in cotton production.