Three measures to deal with yellowing of cucumber melon strips in greenhouse
First, watering before planting
Many vegetable farmers are coveted when planting, often planted in dry soil and then watered. The disadvantage of this is that although the soil surface water and fertilizer are sufficient, it is easy to cause the ground temperature to decrease, and the root system only develops horizontally in the superficial layer, which is unfavorable for the root system to develop in depth. If the water is poured before planting, the root system can be induced to develop in depth. At the same time, the water can be shed after the watering, and then the greenhouse will be warmed up. When the planting is not carried out, the ground temperature will not be too low, which is more conducive to root growth and slow seedling growth.
Second, but remove the lower leaves early
The nutrients required by the root system are mostly provided by the middle and lower leaves. Therefore, the lower leaves should not be removed prematurely, and the leaf diseases should be strictly prevented to ensure the normal photosynthesis of the leaves.
Third, rational fertilization and root protection
After proper application of the base fertilizer, deep application of biological fertilizer in the planting site can improve the soil, prevent diseases, promote new roots and promote the formation of thick roots in the root system. After the cucumber 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 melon strip. Therefore, it is not appropriate to apply too much nitrogen fertilizer. High quality compound fertilizer. 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.
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