２，４－Ｄ喷甜瓜花能增产甜瓜是人们非常喜欢的瓜类之一，近几年面积大增。为了抢早上市，多采取地膜起拱栽培法。一般在４月２０一２５日定植。由于春季风大，气温忽高忽低，易造成落花落呆，而定植越早越严重，直接影响产量，可见拱膜栽培甜瓜保果是丰产的关键。１９９... 2,4-D spray melon flowers can increase melon is one of the people like melons, in recent years an area increase. In order to grab the morning market, take more plastic film arch cultivation method. Usually April 20 to 25 colonization. As the spring monsoon, the temperature fluctuated, easily lead to falling, and planting the sooner the more serious, a direct impact on production, showing arching cultivation melon fruit is the key to high yield. 199 ...