Some time ago, Zibo City, Zibo City, vegetable farmers to inquire: my sweet peppers have flourished, they carried out the second update pruning, but recently there are more rotten, dead trees, how is it?
Case analysis: Sweet peppers were re-pruned through the second time, and they could be raised in the morning for 10-15 days than replanting new ones. However, the wounds caused by the pruning process are large and numerous, and in the summer high temperature season, it is easy to infect various pathogenic bacteria. In the shed of the Shouguang vegetable farmer, we also saw plants that had been renewed by the second time. The whole plant wounds were infected by pathogens and infected with soft rot. Secondly, sweet pepper is a shallow root crop, and its regeneration ability after root injury is weak. This one-time removal of the old and old leaves of the plant completely renewed the management method, resulting in serious root injury, thereby reducing the resistance of bell pepper, easy to appear dead tree phenomenon. In addition, this kind of continuous planting, sheds do not rest, do not carry out soil treatment methods of cultivation, accumulated soil-borne diseases, pathogenic bacteria base number, dead peppers serious dead trees.
To address these issues, we recommend:
First of all, pruning should use multiple methods. In other words, the old leaves of the old branches are removed in stages, giving the roots a certain nutrient relaxation time. If all branches and leaves are removed at one time, the endogenous hormones of the plants are reduced and the balance is destroyed, which stimulates the production of ethylene. Through these changes, plant senescence and root regeneration are affected, and plant resistance is reduced.
Secondly, the use of high-nitrogen compound fertilizer after the pruning to promote buds, promote the restoration of endogenous hormone balance, enhance plant growth and enhance resistance.
Again, take root and prevent disease at the same time. Rooting agents may be used to promote rapid recovery of injured roots, but single use and drip irrigation are not advisable. We can use 30% DT wettable powder 400 times liquid, Prec 600 times liquid plus rooting agent to irrigate roots, not only to promote rooting but also to prevent soil-borne diseases of sweet pepper roots, and to reduce dead trees. It should be noted that irrigating roots is the most effective method for preventing root diseases, and foliar spraying is not effective.
In addition, the sweet peppers have many wounds after pruning, so it is necessary to spray medicine and prevent diseases promptly. The diseases that infect wounds mainly include bacterial soft rot, epidemics, and so on. Generally, pruning is followed by spraying and preventing disease before watering. The agent can choose copper preparations such as copper noble, DT and chlorothalonil and other protective agents, which can prevent fungi, oomycetes and prevent bacterial diseases.
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