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竹笋夜蛾广布南方竹区经营管理粗放、杂草丛生的林分,危害程度尤以淡、刚杂竹为甚。以往多应用喷雾方法防治此虫,山区应用时,除水源困难外,耗时、耗工亦较多,因而难以推广。本试验的目的在于探索山地条件下新的有效防治途径。 方法 供武竹林为刚竹、淡竹两类竹林,经营水平较低、林地荒芜、杂草丛生、历年受竹笋夜蛾危害严重的林分。 防治方法为喷粉和超低容量两种。喷粉系用工农32型动力喷粉机按每亩次8～17斤用量均匀喷布林地。超低容量喷雾系用上海明光仪表厂的手持超低容量电动喷雾器进行,喷药时选择无风天气（低于1M/秒）,喷头离地面高度80厘米,喷幅宽1.5公尺,经测定1.7公尺范围内平均每平方厘米有药点61点,防治一次的时间为出笋前或出笋初期,两次时,其第一次为出笋前,第二次为出笋初期。各处理均在试验地的中心选择大小不一的标准地,笋期逐日统计退笋数和其中虫退数,笋期结束后,调查成竹数,计算防治效果。
Bamboo spider moths widely distributed in the southern bamboo area extensive management, overgrown stand, especially in the light of harm, just miscellaneous bamboo is even worse. In the past, multi-application spraying method was adopted to prevent and control this pest. In the application of mountainous area, except for the water source, it took more time and labor and was difficult to popularize. The purpose of this experiment is to explore new and effective ways of prevention and control under mountainous conditions. Method for the bamboo forest for the just bamboo, bamboo two types of bamboo forest, management level is low, barren woodland, overgrown, over the years affected by the verminaerus moss serious damage. Prevention methods for powder and ultra-low capacity of two. Dusting system with workers and peasants 32 power duster at 8 to 17 kg per acre evenly spray woodland dosage. Ultra-low volume spray system with Shanghai Mingguang Instrument Factory hand-held ultra-low capacity electric sprayer, spraying the windless weather (less than 1M / s), the nozzle height of 80 cm from the ground, spray width of 1.5 meters, the measured 1.7 meters average per square centimeter medicine points 61 points, time for prevention and control of a bamboo shoot before or early shoots, twice, the first for the bamboo shoots, the second for the early shoots. All treatments were in the center of the test to choose different sizes of standards, the number of daily bamboo shoots back and count the number of retreat bamboo insects, bamboo shoots after the end of the investigation into bamboo, calculate the control effect.