5-7 January Southern fine walnut management precautions

1. There are many Rain Water in the south in the first half of this year, and since June, the rainy season in the south has begun to come. The rainy season is the key season to test walnut varieties! In the rainy season, walnut is not rotten fruit, no black spot, charcoal maggot disease, is really suitable for the climate of good varieties! Most walnuts rot in the rainy season, a large number of black spot, no matter how many results are meaningless.

Again, in the south (Sichuan, Chongqing, Hunan, Hubei and other areas), Rain Water is several times or even ten times that of the north. The climate is humid, and it is very easy to get fungal infection, black spot, charcoal maggot.

two。 Longicorn beetles breed in large numbers and lay eggs, and inspection should be strengthened sooner or later until July. Observing the leaves, the eating marks of longicorn beetles are very obvious. if there are grooves in the trunk, just like stitching on the skin after surgery, be sure to hit the grooves, where the eggs of longicorn beetles are laid.

Chemical method: spray tree trunks with green Weilei in May. Or walnut flowering is sprayed with DuPont's Kangkuan + Shuofeng, in addition to preventing longicorn beetles, there is also a better role of flower and fruit protection to prevent fruit drop.

3. This season is the time for flower bud differentiation, apply low-nitrogen, high-phosphorus and high-potassium compound fertilizer, or pure phosphorus dipotassium, and supplement some organic matter, we must control nitrogen fertilizer. It would be better if we had farm manure. Practice has proved that the effect of silkworm sand supplementing organic matter is the most ideal.

For details, please refer to the manual "cultivation and Management techniques of early-bearing Walnut varieties in Chuanqiu". Friends who grow walnuts in the south are also welcome to inquire. The telephone number is 156.0801.8852, Miss Li.