For example, the red pomegranate in Taishan is leafy and leafy, with a general plant spacing of 3×4m, while the red sweet pomegranate in Lintong, Xi is 2-3m× 3-4m. The plastic beauty density of a single main pole can be adjusted around 2×3m, and the plastic beauty density of 2-3 main poles should be controlled around 3×4m.
Common diseases of pomegranate planting and their prevention and control
1, pomegranate stem window moth
This kind of pest mainly harms pomegranate branches, and the general control methods are as follows:
At the beginning of July every year, you need to check your familiarity frequently. If you see branches or branches damaged by pests, cut them off immediately and kill the larvae inside. After the pomegranate tree gradually germinates in spring, all branches, as long as they are dry branches without leaves, need to be cut and burned, and the larvae that spend the winter in them will be killed.
Generally, 500 times insecticidal liquid or 800 times bismaleimide is used to control defecation. Insect larvae in 2-3-year-old branches can be introduced from the bottom of the branches, and then the insect mouths are blocked with pesticide mud to kill the larvae.
The newly hatched larvae can not eat into the branches until 2-3 days later. Therefore, at the peak of insect exudation, 40% omethoate, 50% methamidophos or 40% monocrotophos 1500 times can be sprayed appropriately to prevent larvae from being introduced into branches, and the general control effect can reach 84.9-98.4%.
In addition to the above methods, the seedlings can also be sprayed with drugs at the same time, which will be stronger than that introduced from insect mouths, and can also prevent other leaf-eating pests such as yellow thorn moths from harming the seedlings to some extent. Generally, after spraying the medicine for the first time, spray it for the second time within 20 days, and the actual effect will be stronger.
2, peach moth
This kind of pests mainly harm pomegranate fruit, and the damage rate of pomegranate fruit can be as high as 50-70% in severe cases. In the whole planting process, prevention can be carried out in a caring way:
Check and clean plantations in winter and kill larvae in winter; Before the flowers and trees germinate gradually in early spring, immediately scrape off the thick roots, pick off the insect fruits on the branches or pick up the fallen fruits eaten by insects and burn them together; Blind the male nymph with syrup or sex information growth hormone, and then kill it; In the early stage of the first generation larvae, 50% chlorpyrifos EC, 40% omethoate EC or 50% dimehypo EC 1000 times solution can be sprayed for control.