Rescue six ways to kill fruit trees

First, spraying potassium permanganate

Potassium permanganate is a strong oxidant and has an oxidative decomposition effect on many chemical substances. Spray 6000 times potassium permanganate solution, can effectively alleviate the injury of fruit trees.

Second, spray water

In the early days, the affected fruit trees were sprayed with water to dilute and wash away the pesticides adhering to the foliage and branches, reducing the pesticide content in the tree body.

Third, spray and neutralize

Victim damage can be achieved with 50% humic acid (first with a small amount of water) and 3000 times solution for foliar spray. Leaves will turn green gradually after 3 to 5 days. The copper sulphate ion in the Bordeaux mixture produces phytotoxicity and can be sprayed with 0.5% to 1% lime water for disinfection. Excessive lime sulfur will cause phytotoxicity. On the basis of washing, 500 times more rice vinegar solution is sprayed.

Fourth, timely fertilizer

After the fruit trees are harmed by phytotoxicity, they must promptly apply fertilizer so as to prompt the affected fruit trees to resume their growth as soon as possible. For example, the pesticides caused by the acidic pesticides can be sprayed with some ash and quicklime, and the heavy pesticides can be sprayed with 1% bleaching liquid. For the pesticide harm caused by alkaline pesticides, acid fertilizer such as ammonium sulfate can be applied. Regardless of the causes of the phytotoxicity, foliar spray 0.3% of urea plus 0.2% of potassium dihydrogen phosphate mixture, or spraying with 1000 times of plant power 2003 spraying, spraying once every 15 to 17 days, Even spray 2 or 3 times, can reduce the injury.

V. cultivating loose soil

After the fruit trees are damaged by phytotoxicity, they must unclog the garden in time (with a depth of 10 to 15 cm) and artificially cultivate the roots to improve the permeability of the soil, promote root development, and enhance the ability of the fruit tree to restore itself.

Six, moderate trim

After fruit trees suffer from phytotoxicity, pruning should be carried out in an appropriate amount in time, and the dead branches should be cut off and the dead leaves should be removed to prevent the dead parts from spreading or being infected by pathogens to cause diseases.