When watermelons have not yet reached the peak of expansion, the plants are prematurely shown to have slow growth, short stem sections, thinning melons, smaller leaves, and significant weakening of the base leaves. This is called premature aging. The measures for preventing premature aging of watermelon mainly include the following items:
(1) Strengthen fertilizer and water management: Insufficient or inefficient supply of fertilizer and water is often one of the major causes of premature plant failure. In combination with watering, a combination of top-dressing of roots and spraying of fertilizer solution on the foliage above ground is used. The root topdressing urea 25-30 grams per plant, spraying 0.3% urea or potassium dihydrogen phosphate aqueous solution.
(2) Improve the absorption function of the roots: When the roots are stunted or subjected to certain pests and diseases, premature aging is often caused. If the roots are found to have insect pests, use 50% phoxim EC 2500-3000 times aqueous solution to irrigate the roots, each irrigation 200 -250 ml. If it is due to the physiological diseases caused by water, gas, temperature and other conditions in the root soil, it is necessary to strengthen the cultivating loose soil, loosen the root soil, and well ventilated, and the root absorption function will be improved quickly.
(3) Reasonable pruning of melons: Overweight or single watermelon is also one of the causes of premature aging. The good growth of vine leaves is the basis for good growth of flowers and melons. To achieve high yields, we must have a certain leaf area. If the whole plant weight is too heavy or the number of melons per plant is too large, nutrients will be greatly weakened. Therefore, reasonable pruning of melons to maintain a larger nutritional area is to prevent premature aging of watermelons. The key to high yields.
(1) Strengthen fertilizer and water management: Insufficient or inefficient supply of fertilizer and water is often one of the major causes of premature plant failure. In combination with watering, a combination of top-dressing of roots and spraying of fertilizer solution on the foliage above ground is used. The root topdressing urea 25-30 grams per plant, spraying 0.3% urea or potassium dihydrogen phosphate aqueous solution.
(2) Improve the absorption function of the roots: When the roots are stunted or subjected to certain pests and diseases, premature aging is often caused. If the roots are found to have insect pests, use 50% phoxim EC 2500-3000 times aqueous solution to irrigate the roots, each irrigation 200 -250 ml. If it is due to the physiological diseases caused by water, gas, temperature and other conditions in the root soil, it is necessary to strengthen the cultivating loose soil, loosen the root soil, and well ventilated, and the root absorption function will be improved quickly.
(3) Reasonable pruning of melons: Overweight or single watermelon is also one of the causes of premature aging. The good growth of vine leaves is the basis for good growth of flowers and melons. To achieve high yields, we must have a certain leaf area. If the whole plant weight is too heavy or the number of melons per plant is too large, nutrients will be greatly weakened. Therefore, reasonable pruning of melons to maintain a larger nutritional area is to prevent premature aging of watermelons. The key to high yields.
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