Repeat occurrence reason and comprehensive control of gall insect on pear trees in Qianbei area
Zhang Fa-we · Chinese Horticulture Abstracts · 2012
Gall insects is the main pests of damaging shoot leaves of pear trees in Qianbei area and breeds 4 generations per year with over wintering mature larvae.The paper described the morphological characteristics and occurrence rules,focused on the occurrence characteristics and the reason of occurrence repeatedly,and proposed control treatments.