松黑木吉丁成灾与油松体内水分和温度的关系

2004—2007年，作者从树木生理状况与昆虫生长发育的关系入手，系统研究了松黑木吉丁在北京地区成灾的条件与机理。结果表明:移植树水分的大量丧失，导致树温大幅升高，热辐射增强，增大了移植油松的招虫能力而削弱了其抗虫能力；因受害树光合作用减弱，导致制造的有机物减少，但单位干物质的量反而增多，为松黑木吉丁的暴发创造了良好的食物条件；而树体温度升高，日温差增大，也为松黑木吉丁的新陈代谢与发育加速创造了良好的环境条件。以上因素的综合作用，导致松黑木吉丁在北京植物园内暴发成灾。该文还提出了如何判断油松树体温度过高，需要灌水降温的温度标准与方法。 

Relationship between Melanophila acuminata outbreak and moisture content as well as tree temperature of Pinus tabulaeformis.

During 2004--2007, the conditions and mechanism of Melanophila acuminata attacking the transplanted pine trees in Beijing Botanical Garden were systematically investigated for the first time. The results showed that large moisture losses of transplants led to the tree temperature rising drastically, and the increase of heat radiation induces the transplants more attractive to the pest, and losing the ability of resisting the pest as the result of weakening photosynthesis and decrease of organic compounds. The increase of dry biomass density created favorable conditions for M. acuminata to obtain food, and the increase of tree temperature and day-night temperature difference created favorable environmental conditions for accelerating the metabolism and development of M. acuminata. The combination of the above factors led to M. acuminata outbreak. This paper also suggests the temperature standards and methods to judge whether the body temperature of pine trees is so high that they need to be watered for cooling down the temperature.