Auxiliary device for improving pupating efficiency of rice leaf rollers and using method

Abstract

The invention relates to an auxiliary device for larva pupation of two kinds of leaf roller pests including cnaphalocrocis medinalis and marsamia exigua in rice production, a using method and a pupa collecting method. Polyethylene film is taken as a material, the whole film is adopted or cut into small pieces to be kneaded into balls, and then the balls are unfolded to be placed in a larva culture box containing high-instar larvae of the cnaphalocrocis medinalis or the marsamia exigua in a scattered covering mode; the polyethylene film pieces serve as rolled leaves, and the high-instar larvae pupate in the polyethylene film pieces; when pupae are collected, the pupated pupae are picked out, the pupae are flicked out to be put into a pupa box, and the pupae also can be directly put into the pupa box without being flicked for eclosion. According to the method, the pupation rate is high, the visibility is high, the pupation process is conveniently observed, the pupae are conveniently collected, and the method can be used for auxiliary pupation and collection of the cnaphalocrocis medinalis and marsamia exigua larvae.

Description

technical field [0001] The invention relates to a method for pupating and collecting advanced larvae of two kinds of pests, Cnaphalocrocis medinalis and Marsamia exigua, which are pests in rice production by using a polyethylene film. Background technique [0002] Two vertical leaf roller pests on rice, Cnaphalocrocis medinalis and Marsamia patnalis, are important pests in rice production. They both eat and damage rice leaves and form leaf curls longitudinally, affecting Leaf photosynthesis, resulting in reduced rice yield. [0003] The larvae of the rice leaf roller and the rice leaf roller are collected in the field or raised indoors. The larvae feed and pupate in the rolled leaves, but because the leaves are wrapped, it is impossible to judge which larvae have successfully pupated, and they can only push the leaves Check. However, looking at the leaves will affect their pupation success rate, or even cause them to fail to pupate. This has greatly affected the feeding a...

AI Technical Summary

Problems solved by technology

[0002] Two vertical leaf roller pests on rice, Cnaphalocrocis medinalis and Marsamia patnalis, are important pests in rice production. They both eat and damage rice leaves and form leaf curls longitudinally, affecting Leaf photosynthesis, resulting in reduced rice yield

[0003] The larvae of the rice leaf roller and the rice leaf roller are collected in the field or raised indoors. The larvae feed and pupate in the rolled leaves, but because the leaves are wrapped, it is impossible to judge which larvae have successfully pupated, and they can only push the leaves Check

However, looking at the leaves will affect their pupation success rate, or even cause them to fail to pupate

This has greatly affected the feeding and utilization of the rice leaf roller and the rice leaf roller, and also affected related research work.

For example, if one wants to study the pupal period of the rice leaf roller or the rice leaf roller, it is necessary to know the time when the larva turns into a pupa, but it is difficult to see the pupation state of the advanced larvae because they are inside the leaf buds. Determine when it starts to pupate or pupate, so this study will be limited

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