温度对西瓜种子发芽的影响

目的]为西瓜的种植提供科学依据。方法]以西瓜种子京欣1号为试验材料,分别设置15、20、25、30、35℃几种发芽温度进行发芽试验,研究不同温度对西瓜种子发芽的影响。结果]西瓜种子京欣1号在15℃条件下发芽速度极慢,发芽率也低,发芽势达到60%的天数为9 d,其发芽率为67%;15～35℃范围内,发芽速度随着温度的升高而加快,25、30、35℃恒温培养条件下,发芽势达到60%的天数分别为6、5、5 d,其发芽率分别为86.5%、93.5%和72.0%;发芽势和发芽率在30℃最高,分别为92.5%和93.5%。结论]西瓜种子发芽适宜温度为25～35℃,最适温度为30℃左右。

Effect of Different Temperatures on Watermelon Seed Germination

Objective] The scientific basis of the watermelon planting was provided through the experiment.Method] The watermelon variety—Jingxian No.1 being taken as experimental material,the effect of the different temperatures(15 ℃,20 ℃,25 ℃,30 ℃ and 35 ℃) on the watermelon seed germination was tested.Results] The result showed the germination speed and percentage of watermelon seed were low,and it consumed 9 days while the germination rate reached to 60% and germination percentage was 67%in the treatment of 15 ℃.The germination speed was raised with the increment of temperature in the range from 15 to 35 ℃.It lasted for 6,5 and 5 days while the germination rate reached to 60% and germination percentage was 86.5%,93.5% and 72.0% in the treatment of 25 ℃,30 ℃ and 35 ℃,respectively.And the germination rate and germination percentage reached to the maximum value(92.5% and 93.5%,respectively) in the treatment of 30 ℃.Conclusion] It was the feasible to promote watermelon seed germination in the temperature of 25-35 ℃ and the most optimum temperature was about 30 ℃.