植物受害 meaning in English

hazard of plant

The sesults show that there were 48 species ( variety ) of plant belonging to 14 families as hosts of b . tabaci , among which cucurbitaceae , solanaceae , cruciferae , euphorbiaceae , labiatae , leguminosae and malvaceae are the main host families , and the plants of families of cucurbitaceae and solanaceae are damaged most seriously
结果表明，烟粉虱的寄主有14科48种（变种），主要寄主植物是葫芦科、茄科、十字花科、豆科、锦葵科、菊科等；其中，茄科和葫芦科的植物受害最重。
According to the injury threshold value in two real leaves period , divided the stuff plats into four types : 1 ) the injury threshold value of the plants sensitive to so2 15ppm 3h ; 2 ) the comparatively sensitive injury threshold value 15ppm 3h - 20ppm 3h ; 3 ) the comparatively strong resistant injury threshold value 20ppm 3h - 25ppm 3h ; 4 ) the strong resistant injury threshold value 25ppm 3h
根据2片真叶期伤害阎值，将供试的植物抗性分为4类: l )对50 :敏感的植物受害阂值( 15ppmx3h ; 2 )较敏感的受害j司值15ppmx3卜zoppmx3h ; 3 )杭性较强的受害j司值zoppn ， x3h一25ppmx3h : 4 )抗性强的受害阂值> 25ppmx3h 。