摘要
通过对无公害栽培苹果园山楂红蜘蛛发生分布规律及防治措施的研究发现,无公害栽培苹果园越冬态山楂红蜘蛛种群数量为平地园>阳坡园>阴坡园;越冬态山楂红蜘蛛在树体上集中分布在主干及第一层主枝的翘皮、环剥缝隙、剪锯口及气生根等处。从山楂红蜘蛛发生动态看,1 a中有2次发生高峰,分别为3月底至4月初6、月底至7月初。早春彻底刮皮后,每株树上越冬态山楂红蜘蛛数量仅为未刮老翘皮树的3.77%;萌芽前喷5波美度石硫合剂防治越冬态山楂红蜘蛛,喷药7 d后防效达90%以上;生长季应用1.8%阿维菌素3 000倍液或24.5%绿维虫螨2 000倍液控制山楂红蜘蛛危害的校正防效均在97%以上。
The distribution patterns and control measures of hawthorn spider mite in pollutant-free apple orchards were studied. The results showed that： the overwintering form population of hawthorn spider mite in pollutant-free culture apple orchards was ground orchard 〉 southern exposure orchard 〉 northern exposure orchard 〉 ordinary orchard, the overwintering form of hawthorn spider mite was concentrated in trunk and first layer limbs, girdling cracks, pruning wounds and aerial roots, et al. It had two occurrence peaks in one year, one occurred from the end of March to early April, the other from the end of June to early July. The amount of hawthorn spider mite in every apple tree whose old crack barks were scratched thoroughly in early spring was only 3.77% compared to no scratching the crack barks ; spraying 5°Be lime- sulfur before germination to control the overwintering hawthorn spider mite, could get control effect of over 90% 7 days later; the corrected control effect was over 97% after sprayed Aweijtmsu with 3000 × dilution and Lvweiehongman with 2000 × dilution in vegetative growth phase.
出处
《河北林果研究》
2005年第3期268-272,共5页
Hebei Journal of Forestry and Orchard Research
基金
河北省科技攻关项目(00220117D-1)的部分内容。
