Planting technique of sugar orange: how to control heart beetle?
How do sugar oranges control heart worms? Please guide the control methods of sand sugar orange borer mainly by longicorn beetle or gibberellin larvae. The control methods are as follows: 1. Assassinate or hook the larvae from August to September according to the feces of the larvae in the cave. After determining the size of the instar and the presence or absence of insects and their states in the hole, the larvae can be stabbed to death several times by inserting a sharp thin iron wire into the end of the tunnel from the fresh defecation hole. You can also use a small iron bar to hollow out the insect dung in the hole and tie it into a ring with about 18-24 steel wires. there is a small hook at the front end and spread out according to the deep and shallow ring of the hole, slowly twist and send slowly, and hook and kill. 2. The larvae of the first instar can be poisoned with 20-30 times of dichlorvos, trichlorfon, dimethoate or chlordimeform to wipe the egg grooves. The larvae that enter the xylem first empty the feces, and then use rag strips or cotton stained with dichlorvos or omethoate emulsion 5-10 times into the cavity to build tight; if the single hole where the decay path is not mutually exclusive, the above solution can be injected into the hole with a large syringe, and then the hole is sealed with mud The gasoline can also be injected into the wormhole with a syringe or broken with camphor balls and stuffed into the hole, the dosage of each hole is 1 inch, and then sealed with yellow mud, the above methods are effective in killing longicorn beetle larvae. The poisoning method should be carried out before September-October. 3. Hunting and killing longicorn beetle adults from early August to mid-September, longicorn beetle adults like to live in the muggy, southerly evening or hot noon, where the holes of the old trees or the branches of the young trees can be caught and killed in time. 4. when strengthening garden cleaning and pruning in winter, we should check all kinds of holes in the trunk, plug the holes with clay, trim the rough seam and burst bark, keep the trunk smooth, and cut down the plants and aging trees with high insect population density in time. Brush the trunk and main branches white before the severe cold comes. In addition, during the peak spawning period and hatching period of longicorn beetles from the middle of May to the first ten days of June of the following year, the topsoil around the tree stalk was removed, the soil was evenly mixed with omethoate 50ml, and then the tree trunk was brushed white, which could effectively prevent the adults from laying eggs and hammering the eggs or newly hatched larvae on the tree trunk with a small hammer in time, and the control effect was also good. Click to get more sugar orange planting techniques click to get more fruit planting techniques
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Planting technique of sugar orange: how to prevent cracking of sugar orange?
How to prevent cracking of sugar tangerine? Is there any good way to prevent sugar orange from cracking? Please introduce the prevention and control methods of sugar orange cracking fruit can refer to the following list: 1, apply less phosphate fertilizer, increase potassium, fertilizer and farm manure, and dig a hole of 30ml and 40cm deep on both sides of the canopy of the fruit tree from late July to early August.
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Sugar orange planting technology: sugar orange fertilization should pay attention to what?
What do sugar orange fertilizers pay attention to? Please give guidance in the usual visit to the countryside process, found that many farmers in the sand sugar orange fertilization is not reasonable, the following list for reference: partial application and excessive application of nitrogen fertilizer: more production is the application of urea. According to investigation, in recent years strong fruit fertilizer single application...
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