1.苗期虫害及防治低温季节,西瓜苗床容易出现蛴螬、金针虫和瓜种绳为害,尤以蛴螬和瓜种蝇为害较为多见,蛴螬潜行幼苗根际土壤中,夜间咬伤和截断幼苗,1个蛴螬可为害附近几十株西瓜幼苗。出现蛴螬后,应及时用90%敌百虫晶体300～500倍液进行灌根,一般每株需浇灌0.2公斤药液。 1. Seedling pest and the prevention and treatment of low temperature season, prone to watermelon seedbed infested grubs, insects and cucurbitaceous rope damage, especially the galls and melon species flies more common, snakes sneak nursery rhizosphere soil, night bites and truncated seedlings , A 蛴 螬 can damage dozens of watermelon seedlings near the seedlings. After appendix, should promptly use 90% trichlorfon crystals 300 ~ 500 times for irrigation, generally each plant needs to be irrigated 0.2 kilograms of liquid.