The application of the predatory mite products and the apple, pear and chestnut

The predatory mite products and "mites in" the use of technology in apple, pear, chestnut

Apple, pear, chestnut for deciduous fruit trees, the annual winter damage (the type of red spider mite: hawthorn spider mite, Panonychus ulmi (Koch), two spotted spider mite, Oligonychus ununguis) to mites overwintering, the second year April - 5 hibernate eggs in June and July outbreak damage. The predatory mite products and "mites in" the use of technology in apple, pear, chestnut as follows:

Clean orchard: every March 1-2 month late orchard -4 times comprehensive cleaning (pruning, chemical control), kill the winter mite (red spider) of the female adult mites and first young mites.

Release period: in early April each year in late August when per leaf quantity of pest mites less than 2 (including eggs) when the release of predatory mites, a bag of per plant, each bag is 2500 (mixed instars), if each leaf mite number greater than 2, the available low toxicity pesticide spray sprinkle 1 times, 7-10 days after the release of predatory mites (Amblyseius cucumeris). The most suitable release period: late April - 5 month apple, pear, chestnut Park in mite just next to the new leaf migration period. At this time, the release of predatory mites can effectively tackle pest mites, reduce pest mites base, reach twice the result with half the effort effect.

Release method: each strain of a bag (2500 only), released in the evening or cloudy. In the bag at 1/3 above the diagonal shear half inch nails hanging main rod back the sun in the canopy on the bottom of the bag on the branches.

Supporting measures: every 10-30 Mu placed a lamp frequency trembler grid lamps, trapping and killing other pests, hanging sex pheromone attractant pear small shixinchong and codling moth adults, 2-4 Mu hang a lure, each year in mid May in the canopy hanging yellow aphids (Winged) and pear Psylla, the use of imidacloprid forest pest injection to control the orchard pest shield and pear small shixinchong. 7-10 days after spraying; not squeeze, press, knead the product; after the release of banned pesticides; please dont and pesticide, fertilizer mixed; before the use of stored in low temperature or shade, the intolerance storage, shelf life of 15 days (20 to 25 DEG C), 8 days (25-30 DEG C). Encountered during use occurred in other diseases, insects and mites harm can use matrine, azadirachtin, thiamethoxam, spirodiclofen, Nong Wei, Tiansi state, Qi Chan and other biological pesticide.