Slow winter greenhouse vegetable growth response measures
After entering January, the coldest time of the year, for the vegetable growers who grow winter vegetables in greenhouses, is also the most difficult stage of management during the year. On the one hand, the number of cloudy days in winter increases, and the light is limited, affecting the photosynthesis of vegetables; on the other hand, when the temperature reaches the coldest time of the year, the drop in temperature directly leads to a drop in the temperature, resulting in a poor vegetable root system and affecting vegetables. Growing up. These two reasons often cause the vegetable to grow slowly, and even appear to "shut down", resulting in no yield of vegetables.
The reason for the slow growth of winter vegetables
It seems to be a problem of ministerial power on the ground, but the most fundamental problem lies in the roots, which are the weakness of the root system. Since the growth of vegetables to the present, roots have been affected by various reasons and they have begun to age. They show that old root activity is reduced and new roots are not allowed to go. Therefore, the root group is shallow, and the ability to absorb nutrients and water is reduced, which leads to the weakening of vegetables and low yield.
Cause root aging:
First, inadequate ground temperature, vegetable root growth to maintain above 12 degrees, new roots can grow, if the ground temperature is insufficient, directly lead to vegetables without new roots.
Second, soil compaction and salinization seriously affect the roots undershooting and renewal. The new root growth rate can not keep up with the old root necrosis rate, making new roots less, and over-strength hardening and salinization will further increase the root collapse phenomenon. .
3. Diseases caused by root diseases, Fusarium, Pythium, and other soil-borne diseases severely weakened the plant growth and caused no new roots, resulting in serious death problems.
In order to solve the problem of slow growth of vegetables, we must start with the root system, and promote the development of the roots.
1, control the fertilization. Many farmers saw that the growth of vegetables was slow, and they thought that it was caused by insufficient fertilizer and began to over-fertilize. In fact, the more fertilized, the more it would affect the roots of vegetable roots, and did not fundamentally solve it. Therefore, if water shortage can be watered during this period, the use of chemical fertilizers must be controlled.
2, root to rejuvenate. If the growth of the crop is already weak, the supplement fertilizer will not work well and the root system will not absorb it. Firstly, the application of 500 microe ash with Ciba, 150 grams/mu of Ciba-bar and zinc fertilizer, rooting and strengthening the seedlings, improving the growth, supplementing the boron root with long-term anti-zinc, bacterial growth and rooting, slow growth of plant fruit, regenerating and regenerating seedlings . By adding Bacillus to improve the growth environment around the roots, the purpose of stimulating rooting is achieved; at the same time, boron fertilizer is added to promote the extension of capillary roots, and zinc fertilizer is added to increase the stress resistance of vegetables.
3. Solve the problems of soil compaction and salinization. This is the basis for the promotion of root barricades. Only a safe and favorable root environment can be created to ensure the growth of the root system and deepen the root system.
Each kilogram of soil sorghum fine 1 kg + soil Jia Mei 200 ml, and then watered. Note that the loose soil essence is applied to the small rows of vegetables to loosen the soil and change the soil into a granular structure that promotes rooting.
4, foliage fertilizer to stimulate growth. Foliar spraying Yejiamei 1000 times solution + Jiayuan dihydrogen potassium 500 times solution, spraying once every 5-7 days, even spraying 2-3 times, adding phosphorus and potassium fertilizer to the leaf surface to add alginic acid, can also stimulate vegetable rooting It can also reduce the aging of vegetable leaves and make the vegetables grow faster.
Note that whether it is watering or spraying, be sure to choose sunny weather, not cloudy. And watering should be poured with small water, can not flood irrigation, prevention and control ground temperature drop is too large.
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