1.授粉时间一定要拿捏好由于棚内缺少传粉昆虫,秋茬西瓜通常需要借助人工授粉,且授粉期相对集中。西瓜花冠在凌晨5时左右开始松动,6时左右开始散出花粉,花冠全部展开,至中午时,花冠颜色变淡,开始闭合。上午8~10时是雌花柱头和雄花花粉生理活动最旺盛的时候,此时也是授粉的最佳时间。一般西瓜授粉完成时间以7天为宜,这样西瓜坐果 1 pollination time must take good As the shed lack of pollinators, autumn watermelon usually need artificial pollination, pollination and relative concentration. The watermelon corolla started to loosen at around 5:00 a.m., and the pollen began to bloom at about 6:00. All the corolla began to unfold. At noon, the color of the corolla became pale and began to close. 8 am to 10 am when the female flower stigma and male flower pollen physiological activity of the most productive time, this time is pollination the best time. The general watermelon pollination time to 7 days is appropriate, so watermelon fruit