论文部分内容阅读
西瓜是夏季人们比较喜爱的消暑食品,所以,到了季节需求量非常大,因此种植西瓜也有很好的经济效益。但是,种植过程中害虫会对西瓜造成一定的危害,造成减产和质量下降,直接影响经济效益,所以对于害虫的防治非常重要,下面主要介绍一下地下害虫的防治。一、地老虎。俗话称为土蚕、截虫、切根虫、墨地蚕。1.危害性。地老虎是一种分布广泛危害严重的地下害虫。其幼虫危害幼苗,幼虫咬食小苗时,
Watermelon summer summer is the preferred cooling food, therefore, to the seasonal demand is very large, so planting watermelons also have very good economic benefits. However, the pests in the planting process will cause some harm to the watermelon, resulting in reduced production and quality decline, a direct impact on economic benefits, so for pest control is very important, the following describes the prevention and treatment of underground pests. First, the tiger. As the saying goes, earthworms, trichomonads, cutworms, ink silkworm. Harmful The tiger is a widely distributed underground pest. Its larvae endanger seedlings, larvae bite the seedlings,