Most farmers in Heban Village, Heguan Town, Qingzhou City plant zucchini. Recently, the reporter went to the shed of the vegetable farmer Li Chengjun and saw that the whole squash squash has entered the late stage of growth. The lower part of the zucchini is piled with thick leaves, and its ventilation and light transmission are extremely poor. Some of the leaves are already infected with the disease. “Is your zucchini not picked leaves since it was planted?†the reporter asked.
“The zucchini leaf is too big and the water content is too high. If the leaves are picked off, it is easy to infect from the wound. I have had some lessons in this regard. Therefore, for the sake of safety, the vegetable farmers here do not generally pick the leaves,†said Li Chengjun. "If you don't pick the cucurbit leaves, there are too many leaves in the lower part of the squash. You see, these leaves are shaded one another, the photosynthesis is definitely poor, and the organic nutrients produced are less, which will affect the yield of zucchini. And, it makes the lower part of the plant. The humidity is particularly high and can easily cause Sclerotinia, Botrytis, etc. In particular, when you are in agricultural operations, you will inevitably step on and break off some leaves and cause wounds. The bacteria are particularly vulnerable to infection from these places, leading to an outbreak of diseases. The lower leaves of zucchini should be properly removed," said the reporter.
Hearing this from reporters, Li Chengjun said: "It is such a truth. After picking leaves, how can we prevent germs from infecting the wounds?"
The reporter recommended that vegetable growers pay attention to three issues when picking the leaves, and they will be able to solve the problem of disease infection from the wound after picking leaves.
First, when the leaves are picked, only the leaves are removed and the petioles are not removed. All or most of the leaves can be removed. The petiole should be preserved. Because the petiole is thick and brittle, the leaves are removed from the base. The stem is prone to large wounds and difficult to heal. After picking the leaves, the petioles will gradually shrink and dry, and the wounds will not form after the removal.
Second, the removal of the leaves is best sunny morning, optional watering 5-7 days later, when the greenhouse is relatively dry, it is more conducive to wound healing.
Again, after picking the leaves, it is generally a bacterial disease that infects the wound. It is recommended that vegetable farmers spray 72% of streptomycin sulfate 3000 times or 47% of Garnett 600 times after harvesting the leaves in the entire greenhouse to prevent diseases. It is the occurrence of a bacterial disease.
In addition, picking up the leaves should not be too much. Generally speaking, it is advisable to remove one-third of the lower leaves. It depends on the condition of the plants and the condition of the leaves. After picking the leaves, the growth of the summer squash and the fruiting squash can not be affected.
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