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谷草把(南方多为稻草把)诱卵是预测粘虫发生期的重要方法。在大田防治上也广为应用,对掌握发生期,控制为害起了一定的作用。但长期的实践使我们感到,谷草把诱卵有它的缺陷:1.诱力差。常年一代粘虫发生季节,百把卵量100块左右,卵量消长不明显,如若是霉变的或是纹枯病严重的稻草,诱卵能力更低。2.有效诱卵时间短。据观察,插放一星期后诱力即下降。3.查卵困难,花工量大,易漏查。我们在田间查卵时发现,在蝼蛄为害的枯黄麦苗上常见到粘虫卵。据此,我们于1973年
Asparagus (mostly straw in the south) is an important method to predict the occurrence of armyworm. It is also widely used in the prevention and control of the field. It plays a role in grasping the occurrence and control. However, long-term practice makes us feel that the straw has its drawbacks: 1. Perennial generation of armyworms occurred in the season, 100 eggs around 100, the amount of growth and decrease of eggs is not obvious, if mildew or sheath blight serious straw, lower egg capacity. 2. Effective ovulation time is short. It is observed that the attraction drops after a week of insertion. 3. ovulation difficulties, large amount of flowers, easy to omissions. When we check the eggs in the field, we found that the eggs of the armyworm were found on the brown wheat seedlings harming the grubs. Accordingly, we in 1973