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deciduous pine bee，belonging to membrane wings，Leaf Beeae，Also known as deciduous pine red abdomen bee。The larvae mainly feed the deciduous pine needle leaf，Chinchlona can be eaten when it happens。Especially serious harm to young trees，To the new shoot bent，Dead branches，Crown deformation，It is difficult to close into m88 live casino games 。

2007，Xinglongshan Reserve North China Falconum Pine Artificial m88 live casino games encountered great harm，Some m88 live casino games trees bald leaves，Overlooking a piece of yellow。According to the survey，An area of ​​more than 10,000 acres of an area of ​​that year，Where，Mild 5000 acres、Moderate 3100 acres、Weight 2000 acres，Involved in 18 Lin Class，31 small shifts，The average victims rate is 25%，Individual small class is as high as 76%，The average density of the insect mouth is 7 heads/100cm standard branches，Harmly severe areas reached 22 heads/100cm m88 best betting websitestandard branches，The average density of the pre -pupa is 90/㎡，880/㎡。After 7 consecutive years of prevention，The average victim's rate drops to 9%，The average insect density is 1.5 head/100cm standard branches，The average pre -puppet density is 12/㎡，The maintenance measures taken are mainly the following:

1、Tobacco prevention and control: region with a closed degree of decues of the m88 live casino games ，Set the fear of the enemy and the cucumber cigarette，1 kg per mu。

2、Spray prevention and control: For artificial m88 live casino games with less depression, artificial m88 live casino games ，Use "Sen Debao" wettable powder m88 live casino games2000-3000 times solution for conventional spray。

3、Artificial prevention and control: late autumn to early spring of the year，Method of manually cleaning the deciduous layer，Winter cocoons of fallen leaf bees out of the m88 live casino games ，Concentrated burning。

Supply: Zhou Huili Editor in charge: Wang Yanting