Apple tree virus leaf disease prevention and control methods

1, the virus tree mark clearly, do not pruning tools with poison spread, contact with the virus tree tools should be "peroxyacetic acid" disinfection. Control aphids and red spiders to prevent the spread of insect vectors.

2, increase the application of organic fertilizer probiotic bacteria fertilizer, silicon fertilizer, to strengthen the tree. Each tree into the "black and bright or all things good" amino acid organic fertilizer 3 kg, "Zhuangjia Bao" bacteria fertilizer 4-5 kg, 1 kg of flowers and leaves green fertilizer, White Russian 45% compound fertilizer 2 kg.

3, pharmaceutical root irrigation, with "polymyxin-like bacillus" (Kandileide) with amino acids 300 times root irrigation, 30-60 pounds of liquid per plant, in the sprouting or young fruit irrigation.

4, post-flowering foliar pharmaceutical control on the basis of the normal medication program, ninamycin 600 times + virus 2 600 times.

Points of apple tree planting:

1, apple root system has no natural dormant period, adult trees have 2 to 3 times a year growth peak, according to the distribution of photosynthesis products, the rate of formation of organs on the ground and soil temperature, moisture and other external environment and transfer.

2, apple like cool and dry, sunny climate conditions. It is generally believed that the average temperature of 12 degrees to 18 degrees in the growing season from April to October is most suitable for the growth of apples.

3, apple is suitable for deep soil, well-drained and rich in organic matter sandy loam.