影响重茬西瓜发育生长和优质高产的障碍是根酸 ,主要是枯萎病病菌危害。偏施Ｎ肥以及微量元素欠缺的瓜田 ,易导致枯萎病的发生。现就重茬西瓜田间管理和病虫防治措施简介如下 :一、深翻改土　重茬西瓜地深翻易在年内进行 ,结合深翻亩施 1 0 0～1 50公斤生石灰和 5～ 6公斤硫酸 The obstacle to the growth and quality and high yield of cropping watermelon is the root acid, which is the main pathogen of Fusarium wilt. Partial fertilizer N fertilizer and trace elements lack of melon, easily lead to the occurrence of blight. Here are cropped watermelon field management and pest control measures are as follows: First, the deep changes in soil deep-watermelon cropped in double cropping during the year, combined with deep-shuo acres Shi lime and lime 5 to 6 kg