Control of Red Meat Honey Pomelo Red Spider

Red spiders on red flesh honey pomelo trees, also known as tumor-skinned red spiders, occur for several generations in a year, sporadic in mid-March, peak damage periods in April, May, September and October, and a large number of drought in autumn. Now it is the season of high incidence of red spiders. For the yield and quality of red flesh honey pomelo this year, Jinsheng Red flesh Honey Pomelo Farm specially recommends the prevention and control of red spiders, vigorously popularizing biological control techniques on the basis of agricultural measures, and focusing on the use of chemical control methods. control the harm base. 1. Agricultural control: strengthen cultivation management, cultivate robust plants, timely and reasonable pruning, so that the reproductive growth and vegetative growth of red flesh honey pomelo trees to maintain an appropriate proportion, so as to maintain a stable yield every year. Rational fertilization, especially nitrogen fertilizer, should not be too much, because too much nitrogen fertilizer will promote the reproduction and growth of red spiders. Timely and rational irrigation, fully meet the water needs of red flesh honey pomelo plant growth and development, maintain a certain humidity in the garden, drought is conducive to the occurrence of red spiders, not conducive to the development of its natural enemies. Reasonable interplanting of dwarf plants, such as peanuts and legumes, can not only improve the soil quality of orchards, but also benefit the survival and development of beneficial insects and bacteria. two。 Biological control: natural enemies play a significant role in controlling red spiders. The main natural enemies of red spiders are predatory mites, lacewings, small black ladybugs, six-spot thrips and parasitic bacteria, budding mildew and so on. However, at present, there are still some difficulties in cultivating these natural enemies. 3. Chemical control: at present, the most important way of prevention and control is through chemical methods. In the overwintering period, the liquid was sprayed once in the first ten days of February, 2000 times of Kmante, the first peak was sprayed from late April to mid-May, 2000 times of pyridazinone, or 2500 times of Tisuril, and 3000 times of Kmante from mid-June to late June. If the insect source did not reach a peak or the insect source was less than one leaf in the middle of September, the pesticide concentration was 3500 times. The population density of red spider worm could be sprayed 1500 times after fruit harvest in the middle of November. If the orchard inspection of rare red spiders can not spray, waiting for mid-late December spray turpentine mixture will also be combined with the effect of killing red spiders.