Editor's note: At present, it's another year to build the park. Apple is the main cultivated fruit tree in northern China. Although the apple trees currently planted have to pass the test of severe winter, the survival rate of seedlings is low.......

The high yield of melon can not be the key, the key is to taste sweet, because only high quality and good price can guarantee high yield. The sweetness of melons and fruits lies in fertilization, not the application of more fertilizer, but the app.......

1. Ensure the pure culture of the strains, be careful not to use strains contaminated by other bacteria, and do not connect and cultivate them at close range.
2. Strictly control the number of passages of the bacteria, reduce mechanical damage,.......

Corn lodging is mainly caused by heavy winds or heavy rain or pests. After lodging, it will affect ventilation, light transmission and poor pollination. Measures should be taken in time to try to reduce losses.

First, prevent countermeasures

1. Appropriate deepening of till.......