Greenhouse vegetables prevent premature aging

Sheds tend to have premature senescence in the late stages of growth, resulting in reduced yields and decreased quality. In order to prevent premature aging of greenhouse vegetables, the following three kinds of premature causes should be clarified and timely controlled:

First, premature aging caused by improper defertilization of fertilizer and water use, such as premature debility and premature aging. Before the planting of vegetables, the base fertilizer should be applied to ensure sufficient nutrient supply during the vegetable growth period. After entering the result period, it is necessary to replenish with water and timely supplement the plant nutrition.

Watering should be done in the morning in fine weather. Make sure there are 2~3 days of sunny days after watering. After watering, it should be heated and then ventilated to avoid premature aging caused by excessively low temperature. Also note that the amount of water should not be too large for each time to prevent rooting.

Second, growth disorders, premature aging, planting vegetables in the winter, due to low temperatures, plant slow seedlings and growth are slow, when the plant growth is weak, you can spray the alkaloids on the foliage; when the leaves turn yellow when you can spray cytokinins To prevent premature aging of the root can spray 6000 ~ 8000 times more love to promote root growth. During the fruiting period, it is necessary to leave fruits at a reasonable level, pay attention to the balance between vegetative growth and reproductive growth, and do not leave too many fruits to cause falling trees. Pay attention to timely harvesting. Solanaceous fruits and melon vegetables promote proper early harvest of fruits, which can prevent premature aging of plants and promote multiple plant results. In addition, we must pay attention to the protection of the lower leaves. After the fruit is harvested, the lower leaves should not be completely removed, so as to avoid causing the plant roots to lack the nutrient supply of the leaves and premature aging.

Third, pests and diseases prevention and control of pests and diseases to prevent. The common diseases of Solanaceous vegetables in winter are mainly the diseases of tomato early blight, late blight, leaf mold and pepper vegetables, bacterial leaf spot, etc. It should be noted that early prevention and early treatment should be taken to control the spread of the disease as early as possible.

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