王东沟小流域果园病虫害发生与综合防治

Occurrence and Integrated Control of Disease and Pests of Orchard in Wangdonggou Watershed

长武王东沟杏园虫害为李小食心虫、桑白蚧 ,病害为杏疔病 ,苹果树上的害虫为桃小食心虫。李小在杏园中4月中旬出土 ,6月初达到为害高峰期 ,桑白蚧 5月上旬为卵孵化高峰期 ,桃小食心虫越冬代幼虫出土高峰期在 6月 7日左右 ,第一代幼虫孵化高峰期在 6月 2 5日到 7月 1日之间 ,第二代幼虫孵化高峰期发生在 8月 15日左右。在防治上主要抓住越冬幼虫出土期、幼虫脱果期、幼虫孵化期进行地面喷药和树上喷药 ,同时结合成虫诱杀、套袋等措施。

The plum fruit moth, Grapholitha funebrana Treitscheke, white peach scale, Pseudaulacaspis pentagona Targioni-Tozzetti and Polystigma deformans syd are main disease and pests of Prunus armeniaca L.The peach fruit borer, Carposina sasakii Matsumura is main pest of apple in Wangdonggou Watershed. The plum fruit moth comes out of the ground in mid April and damaging peak is in early june. White peach scale's hatching peak is in early May.The peak of overwintering larvae of peach fruit borer's coming out of the ground is on June 7 about and the hatching peak of first generation of larvae is between June,25 and July,1.The hatching peak of the second generation of larvae is in mid August about. It is important that spraying on the ground and trees at the time of larvae's coming out of the ground, coming out of fruit and hatching. The orchard owner should attract adult to kill and mask fruit also. It is useful to destroy diseased branches and spray on the trees for control of Polystigma deformans syd.