At present, it is the greenhouse melons listed season. I recently discovered in Gaoguanzhai Town, Zhangqiu City, Shandong Province that some melon farmers are worrying about melon cracking melons. Melon cracking melon is a physiological disease that occurs mostly in ripening melons. Melon melons form a large and deep longitudinal crack on the melon surface, and start from the thinner fruit umbilicus, which seriously affects the quality and yield of melon. Causes of melon cracking melon generally have the following aspects:
The first is dry after the wet, uneven wet and dry, resulting in cracking melon to prevent melon seedlings in the early period of leggy, and some melon farmers in the melon before the growth of excessive water control, resulting in fruit expansion period of water shortage, so that the premature aging of the rind hardened. With the increase of temperature during the late-expansion period, the amount of water needed for melons began to increase. At this time, some melon farmers once again watered too much, and the melons grew rapidly and quickly, causing melons to crack.
The second is the improper use of hormone concentrations caused by cracking melons. In recent years, most melon farmers use 0.1% clomazone urea plant growth regulators, used to improve melons sitting rate. Similar plant growth regulators should be used in strict accordance with the instructions, and should be based on the appropriate regulation of the temperature at the time. If the concentration is too high, especially in the early stages of fruiting, use some growth inhibitors or hormone concentrations should not be too large, the concentration is too large, the fruit surface is susceptible to premature aging, while the internal tissue growth is accelerated, the external epidermal growth is too slow, it is easy to cause Crack melon.
The third is to remove too much premature leaves, melons exposed to direct sunlight caused melon to prevent diseases, strengthen ventilation, melon too early to remove the old leaves too much, so that the bottom of the melon lose the shade of the leaves, melon in bright light, peel Aging hardens, and the peel shrinks to produce a concentric circular crack on the melon surface.
Fourth, the lack of boron and calcium in the soil, such as soil compaction or lack of trace elements in the soil, results in cracked melon soil compaction, water seepage is too slow, and the roots have poor air permeability, which affects the absorption of nutrients by crops. In addition, the soil itself lacks of boron and calcium deficiency, especially for continuous plots, the lack of calcium and boron deficiency is relatively heavy, and the cracking of melons is more.
Prevention of cracking melon measures to strengthen management and rational watering. For the melon land with soil compaction and slow water seepage, it can be top-dressed with watering, and it can be used for deep-cultivation of 1~2 kg per acre without using deep plowing to break soil compaction, deepen tillage layer, increase soil permeability, and preserve fertilizer. Water retention, to solve and reduce the role of crop physiological diseases. In addition, for high temperature weather, attention should be paid to calcium in the foliage. In general, spraying 1000 to 1500 times faster boron solution, while adding 3000 times the liquid Shuofong 481 or 1000 times Indian calcium, spray 6 to 7 days once, even spray 3 times, can effectively avoid and reduce crack melon.
The first is dry after the wet, uneven wet and dry, resulting in cracking melon to prevent melon seedlings in the early period of leggy, and some melon farmers in the melon before the growth of excessive water control, resulting in fruit expansion period of water shortage, so that the premature aging of the rind hardened. With the increase of temperature during the late-expansion period, the amount of water needed for melons began to increase. At this time, some melon farmers once again watered too much, and the melons grew rapidly and quickly, causing melons to crack.
The second is the improper use of hormone concentrations caused by cracking melons. In recent years, most melon farmers use 0.1% clomazone urea plant growth regulators, used to improve melons sitting rate. Similar plant growth regulators should be used in strict accordance with the instructions, and should be based on the appropriate regulation of the temperature at the time. If the concentration is too high, especially in the early stages of fruiting, use some growth inhibitors or hormone concentrations should not be too large, the concentration is too large, the fruit surface is susceptible to premature aging, while the internal tissue growth is accelerated, the external epidermal growth is too slow, it is easy to cause Crack melon.
The third is to remove too much premature leaves, melons exposed to direct sunlight caused melon to prevent diseases, strengthen ventilation, melon too early to remove the old leaves too much, so that the bottom of the melon lose the shade of the leaves, melon in bright light, peel Aging hardens, and the peel shrinks to produce a concentric circular crack on the melon surface.
Fourth, the lack of boron and calcium in the soil, such as soil compaction or lack of trace elements in the soil, results in cracked melon soil compaction, water seepage is too slow, and the roots have poor air permeability, which affects the absorption of nutrients by crops. In addition, the soil itself lacks of boron and calcium deficiency, especially for continuous plots, the lack of calcium and boron deficiency is relatively heavy, and the cracking of melons is more.
Prevention of cracking melon measures to strengthen management and rational watering. For the melon land with soil compaction and slow water seepage, it can be top-dressed with watering, and it can be used for deep-cultivation of 1~2 kg per acre without using deep plowing to break soil compaction, deepen tillage layer, increase soil permeability, and preserve fertilizer. Water retention, to solve and reduce the role of crop physiological diseases. In addition, for high temperature weather, attention should be paid to calcium in the foliage. In general, spraying 1000 to 1500 times faster boron solution, while adding 3000 times the liquid Shuofong 481 or 1000 times Indian calcium, spray 6 to 7 days once, even spray 3 times, can effectively avoid and reduce crack melon.
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