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一、什么是林木病害林木的正常生长和发育需要一定的环境条件和合理的栽培技术,在林木生长发育过程中,如果外界环境条件不适宜或者遭受其它生物的侵染,就会使林木的正常代谢过程受到干扰,生理机能和组织结构发生一系列的变化和破坏,以致在形态上产生反常,使林木生长发育受到显著的影响,严重时会引起整个植株的死亡,这种现象称为林木病害。林木病害的发生有一定的病理变化过程,林木生病以后,首先发生生理机能方面的变化(如各种酶的增减,呼吸作用和蒸腾作用的加强等),继之,产生组织结构方面的变化(如细胞体积的变大,数目的增加和细胞的坏死
First, what is the forest disease The normal growth and development of trees require some environmental conditions and reasonable cultivation techniques, in the process of forest growth and development, if the external environmental conditions are not suitable or suffering from other organisms, it will make the normal forest Metabolic processes are disturbed, a series of changes and destruction of physiological functions and organizational structure, resulting in morphological abnormalities, so that tree growth and development are significantly affected, in serious cases will cause the death of the entire plant, a phenomenon known as forest disease . Forest disease occurs a certain pathological changes in the process of forest disease, the first physiological and physiological changes (such as the increase and decrease of various enzymes, the role of respiratory and transpiration, etc.), followed by changes in organizational structure (Such as larger cell volume, increased numbers, and cell necrosis