How to plant nanmu? Not easy to die?

Nanmu likes wet and shade, and its site conditions are high. It is advisable to choose deep wet hillside and valley alluvial land for afforestation. Poor afforestation conditions make it difficult to form forests. Detailed soil preparation is required. Generally, the forest land is deeply turned into strips, and the fertile forest land can make holes.

control of insect

1. Shoot-drilling weevil: The larvae bore the buds, causing the injured buds to die. According to the investigation, the number of infected plants can reach 69. 1%, the early oral density is 16.5 plants/plant, and the average number of infected plants accounts for 5. 1% of the total number of infected plants.

Prevention and control methods:

(1) Use 62 1 smoke agent to kill adults during the spawning period in March and the peak period of adults in the middle and late May, with the dosage of 0.5- 1 kg per mu.

(2) Spraying 400-600 times of 40% dimethoate emulsion on new shoots in early April can kill the larvae in the new shoots.

2. Gray Mao Jinhua worm: Adults feed on young leaves, twigs and lobular cortex, which can severely wither the twigs. The damage rate of plants is over 80%. At its peak, there were more than 50 insect victims.