damage rate 第1页

Influences of three host plants on the traits of experimental population of diamondback moth Plutella xylostella (Lepidoptera: Putellidae) Damage Rate of Residual Trees Caused by Chainsaw Felling in the Selective Cutting Operations During Winter in A Conifer-Broadleaved Forest Regulation of Several Plant Growth Substances on Pine Shoot Growth and Their Effects on Shoot Pests Controlling Investiga tion on Ma in Trees Spec ies Damaged by Ice Storm inGuangxi and the Restora tion Mea sures Responses of Apoceynum venetum seed germination to drought and salt stress Factors Affecting the Snow Caused Damage of Larix principis-rupprechtii Plantation in Liupan Mountains of Ningxia, Northwest China