What is the reason why the planted peach withered after the yellow leaves, and then died? How to prevent and cure?

① improper maintenance: cultivation or basin ponding time is too long, noon replenishment, poor water quality, topdressing concentration is too large, fertilizer, base fertilizer excessive, too much shade will cause death. 2. Diseases and pests: a. blight disease. A kind of withered branch disease, mostly occurs in April to June, first yellow leaves and then branches dry and die. b. Leaf blight. Most occur in April to May, the disease leaves yellow thickening, scattered red spots on the back of the leaves, July began to fall off or dry up, even the whole plant died. c. Rhizobia. The infection began at 20℃, and nodules were found in the roots, which mostly occurred under the conditions of continuous cropping, artificial mechanical damage, etc. d. Mites, aphids, scale insects damage caused by the decline in vitality, resistance decline and death.

Prevention and control methods: ① blight disease: a. pruning the diseased branches and then cutting the mouth and smearing sulfur powder. b. spraying 1:1:160 Bordeaux mixture or 5-degree stone sulfur mixture or arsenic flat solution every 7 to 10 days for prevention and control. 2. Leaf blight: refer to blight disease. (3) Mites, aphids and scale insects can be killed with 15% iron methomyl and buried with 20~40 tablets.