运用灰色关联分析理论,对2000 ～2010年开封市西瓜产量和气象因素的关联度进行分析.结果表明,影响开封市西瓜产量的主要气象因素,按照关联度由大到小依次排列为:7月份平均温度＞4月份降水＞4月份平均温度＞6月份平均温度＞5月份降水＞6月份光照＞5月份平均温度＞6月份降水＞4月份光照＞5月份光照＞7月份光照＞7月份降水.通过分析可以看出,开封市西瓜产量与温度条件的关联度最大,由于开封西瓜播种期间,温度仍然不稳定,容易受冷空气的影响,不利于出苗和生长.因此选择适宜的播种期,对提高西瓜产量十分重要.西瓜出苗后应特别注意做好保温防冻工作.开封西瓜进入伸蔓开花期后,应注意降水和光照对西瓜的影响,开封5月份容易出现干旱天气,如果降水偏少,应注意及时合理灌溉.西瓜果实成熟期,正值开封的雨季,要特别注意防范暴雨洪涝和连阴雨天气对西瓜产量造成的不利影响.雨后注意及时排水防涝.开封西瓜生长期间需充足的日照时数和较强的光照强度,若光照不足,会对西瓜生长发育和产量的提高造成明显的不利影响.因此西瓜栽培管理上应该注意对植株及时整枝打杈,减少枝叶重叠,改善瓜田光照条件,以利于西瓜产量和品质的提高.%By the use of gray correlation analysis theory, the correlation between Kaifeng watermelon yield and meteorological factors was analyzed from 2000 to 2010. The results showed that the influential degree of each meteorological factors on Kaifeng watermelon production was ranked in a descending order of the average temperature in July > precipitation in April > average temperature in April > average temperature in June > precipitation in May > sunlight in June > average temperature in May > precipitation in June > sunlight in April > sunlight in May > sunlight in July > precipitation in July. Through analysis, it was found out that Kaifeng watermelon production was highly correlated with the temperature. During the sowing period of Kaifeng watermelon, the temperature is still unstable, and vulnerable to the impact of cold air, which is not conducive to germination and growth. Therefore, (he appropriate choice of sowing period is very important to improve the watermelon production. The watermelon seedlings should be prevented from coldness. The influence of precipitation and sunlight should be noted during the flowering period of watermelon- Appropriate irrigation should be done in case of May drought in Kaifeng, During the maturing period of watermelons, the bad influence of rainstorm and flood should be prevented. tht: growth of watermelons in Kaifeng needs plenty of sunshine hours and sunshine intensity, a lack of sunshine would seriously affect the watermelon yield. Therefore, in managing the watermelon cultivation, the timely pruning of plants should be paid close attention to to reduce the overlapping of leaves and improve the lighting conditions, so as to furthur increase the watermelon yield and quality.
展开▼
