论文部分内容阅读
一、引言 夜蛾成虫吸食果汁,已知在浙江、广东两省山地和近山柑桔严重受害。四川为我国柑桔的主要产区之一,桔园又多分布于广大的山区丘陵地带,有关吸果夜蛾的发生与为害情况,过去未见报导。我们于1963年在四川开展了吸果夜蛾的调查研究,现将初步结果整理报告于后。 二、调查方法 1963年在重庆北碚缙云山下蔡家沟桔园设点调查。该园四周环山,园内混植柚、桔、橙、柠檬、香橼、桃、李、葡萄、苹果、梨等多种果树。 1.吸果夜蛾种类和消长情况观察:选甜橙、红桔成年结果树,定人次(每旬2次,每次2人)、定时间(每次夜间连续观察2小时)分别调查在健果、坏果(果实裂口处或受害果软腐处)上刺孔吸食汁液的虫种、虫数,同时观察记载果皮色泽的变化。从9月中旬开始至11月中旬采果为止,统计为害健果虫种、虫数及该虫种为害坏果虫数。
I. INTRODUCTION Spodoptera worms feed on fruit juices, which are known to be severely affected by mountain and mountain citrus in Zhejiang and Guangdong provinces. Sichuan is one of the main citrus producing areas in China. The citrus orchards are distributed in vast mountainous hilly areas. There was no report on the occurrence and damage of the fruit-bearing insects. We conducted a survey of the fruit-bearing moth in Sichuan in 1963, and we now report the preliminary results in the report. Second, the survey method 1963 in Chongqing Beibei Jinyunxia Caijiagou Orange Park set up a survey. The park is surrounded by mountains, the park mixed grapefruit, orange, orange, lemon, citron, peach, plum, grapes, apples, pears and other fruit trees. 1. Observation on the types and growth and decline of litura moth: The adult fruit trees of sweet orange and tangerine were selected and set at 2 persons (2 times per day). The time (2 hours each continuous observation at night) Health fruit, bad fruit (fruit cracking or soft fruit rot at the Office) on the piercing hole insecticide juice insects, the number of insects, while observing changes in the color of the peel recorded. From the beginning of mid-September to mid-November picking fruit, the statistics for the health-insecticidal species, the number of insects and the number of bad insects pest species.