论文部分内容阅读
提高西瓜的座瓜率,可采取以下几种措施:人工辅助授粉西瓜属雌雄同株异花授粉作物。一般雄花先开,授粉主要靠蚂蚁、蜜蜂等昆虫进行。有时因低温、高湿或遇阴雨连绵以及蜜蜂等昆虫少的情况下,影响西瓜的正常授粉座瓜,结瓜率低。进行人工授粉,一般可使座瓜率提高到80%,增产10%～15%。人工辅助授粉方法是:先摘取雄花,并将雄花瓣向后翻卷,露出雄蕊,手拿雄花在雌花的柱头上轻轻涂抹,使花粉涂遍柱头。一朵雄花可给2～4朵雌花授粉。授粉后遇雨要在雌花上套上小塑料袋或小纸袋,或用瓜叶遮盖,以提高授粉效果。授粉时要注意结合留瓜节位,尽量做到选留部位一致。授粉的具体时间应在每天上午5～8点左右,如果天气阴冷可延迟到9～11点进行。
Watermelon to improve watermelon rate, the following measures can be taken: Artificial assisted pollination Watermelon is a monoecious cross-pollinated crops. The first male flowers generally open, pollination mainly by ants, bees and other insects. Sometimes due to low temperature, high humidity or in case of continuous rain and bees and other insects less cases, the impact of watermelon normal pollination melon, fruiting rate is low. Artificial pollination, the general rate can increase the seat to 80%, yield 10% to 15%. Artificial methods of assisted pollination are: first male flowers were removed, and the male petals rolled back to reveal the stamens, male flowers in the hands of male flower gently smear the stigma, the pollen spread throughout the stigma. A male flower can give 2 to 4 female flowers pollination. After the pollination to rain on the female flowers on a small plastic bag or a small paper bag, or covered with melon leaves in order to improve the pollination effect. Pollination should pay attention to stay in the melon node, try to choose the same site to stay. The specific time pollination should be around 5 to 8 am every day, if the weather is cold can be delayed to 9 to 11 o’clock.