种植南瓜常因阳光不足、N肥过多、授粉不足等原因造成南瓜花多瓜少。为避免以上现象 ,可采取下列措施来提高产量。1　适时摘顶。当瓜蔓长到 2 m时 ,摘去主蔓生长点 ,使主蔓长出成 3～ 4个支蔓 ,促其开花结果。2　搭撑棚架。当支蔓长到 2 m以后 ,引蔓上棚 ,这样可改善透光、通风 Pumpkin planting often due to lack of sunlight, N fertilizer too much, pollination and other causes of pumpkin spend more melon less. To avoid the above phenomenon, the following measures can be taken to increase production. A timely manner topping. When melon grows to 2 m, remove the main vine growth point, so that the main vine grow into 3 to 4 branch vine, and promote its flowering results. 2 support scaffolding. When the sticks grow to 2 m long after the lead vinegar shed, so as to improve light and ventilation