The first reason is that in the early stage of melon, the plant growth regulator is used improperly, the epidermis is aging, and the young melon is swollen to form a crack. Second, after the young melon is in the low temperature period or the epidermis hardening in the late growth stage, the internal agricultural news is over-expanded, and it is easy to produce cracked melon. The occurrence of such a situation is affected by the degree of hardening and water content of the melon skin. When the weather is strong, the epidermis hardens and the rainy days are slow. At this time, if the water is too much, the plant will cause cracking after absorbing water. The greenhouse is ventilated with a ventilating fan, and the epidermis is hardened by cold and is also prone to cracking. The third is the melon in the seedbed, the roots are too deep, and it is easy to cause excessive absorption of water and produce cracked melons.

The first countermeasure is to properly irrigate the water, pay attention to the irrigation period and the amount of irrigation. In the period when the melon is swollen the fastest, the plant urgently needs water, and the amount of irrigation should be more, in order to promote the growth of the melon, and then enter the hardening period of the melon, it is necessary to control the moisture to maintain proper drying. Delay the maturity, reduce the sugar, and cause the split melon. The second is to prevent the melon from being directly exposed to the sun. When the melon is exposed to the sun, the newspaper can be used to cover the sunshade.

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