摘要
1994 年4 月至9 月在昭通市苹果园进行昆虫群落系统调查, 根据调查结果, 应用最优分割法, 将昆虫群落的时间变化分为4 月上旬至7 月下旬, 8 月上旬和8 月中旬至9 月下旬3个有序阶段, 揭示了各阶段害虫、天敌的发生特点, 提出了防治意见.
The time pattern of apples insect was studied in 1999. According to result from systematic investigation, and applying optimization cut apart to time change of insect communities, it separated into three period, that is the first ten days of April to the last ten days, the first ten days of August to the second ten days of September. Revealed the period characteristic on occurrence of insect pest and natural enemy respectively. Worked out control plan of insect pest.
出处
《云南农业大学学报》
CAS
CSCD
1999年第4期358-360,共3页
Journal of Yunnan Agricultural University
基金
国家自然科学基金
关键词
苹果
昆虫群落
时间格局
防治
害虫
Apple
Insect communities
Time pattern
Pest control