The dysplasia of cucumber roots is the main cause of yellowing of melons. The dysplasia of roots will affect the growth and development of the whole plant, so that cucumbers will not get enough nutrients, which will cause yellowing of melons.
First, change the cultivation method: Many vegetable farmers often plant water after planting. The disadvantage of this is that the surface water and fertilizer are sufficient, and the root system develops laterally in the surface layer, but it is unfavorable to the root system. If water is poured before planting, the root system can be induced to develop in depth. At the same time, watering first can also lower the ground temperature, which is more conducive to root growth and slow seedling growth. Protecting the leaves and promoting rooting: The nutrients required for the root system are mostly provided by the middle and lower leaves. Therefore, it is not advisable to remove the lower leaves too early, and the leaf diseases should be strictly controlled.
Second, rational fertilization, rooting and root protection: after applying the base fertilizer in the shallow layer, then deep application of biological fertilizer in the planting part can improve the soil, prevent diseases, promote new roots and promote the root system to develop into a thick root system. The role. After the fruit enters the fruiting stage, the vegetative growth is synchronized with the reproductive growth. When the fertilizer is applied, it is necessary to consider the attacking tree and the fruit attack in the case of ensuring that the root system is not damaged. Therefore, it is not appropriate to apply too much nitrogen fertilizer, and the appropriate amount of high-quality compound should be applied. fat. In addition, if the temperature is too high, the amount of chemical fertilizer should be reduced, and biological fertilizer should be added to ensure the normal growth and development of the root system.
Source: Agricultural Technology Center of Xinji City, Hebei Province
First, change the cultivation method: Many vegetable farmers often plant water after planting. The disadvantage of this is that the surface water and fertilizer are sufficient, and the root system develops laterally in the surface layer, but it is unfavorable to the root system. If water is poured before planting, the root system can be induced to develop in depth. At the same time, watering first can also lower the ground temperature, which is more conducive to root growth and slow seedling growth. Protecting the leaves and promoting rooting: The nutrients required for the root system are mostly provided by the middle and lower leaves. Therefore, it is not advisable to remove the lower leaves too early, and the leaf diseases should be strictly controlled.
Second, rational fertilization, rooting and root protection: after applying the base fertilizer in the shallow layer, then deep application of biological fertilizer in the planting part can improve the soil, prevent diseases, promote new roots and promote the root system to develop into a thick root system. The role. After the fruit enters the fruiting stage, the vegetative growth is synchronized with the reproductive growth. When the fertilizer is applied, it is necessary to consider the attacking tree and the fruit attack in the case of ensuring that the root system is not damaged. Therefore, it is not appropriate to apply too much nitrogen fertilizer, and the appropriate amount of high-quality compound should be applied. fat. In addition, if the temperature is too high, the amount of chemical fertilizer should be reduced, and biological fertilizer should be added to ensure the normal growth and development of the root system.
Source: Agricultural Technology Center of Xinji City, Hebei Province
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