First, the overwintering growth of slow-growing vegetables is the root cause of the slow growth of vegetables. During the growth of overwintering lotus root vegetables, the roots begin to age due to various reasons. They show that the old root activity is reduced and the new roots are not allowed to go. Therefore, the root group is shallow and the ability to absorb nutrients and water is reduced. As a result, the vegetables grow weak and the yield is low. .
Second, the causes of root ageing:
1, insufficient ground temperature. The root growth of vegetables should be maintained above 12°C, and new roots can grow. The lack of ground temperature directly leads to the lack of new roots in vegetables.
2. Soil compaction and salinization. Seriously affect the roots under the bar and renewal, the new root growth rate can not keep up with the speed of old root necrosis, so that less new roots, and over-consolidation and salinization will aggravate the root of the roots of the phenomenon.
3, root disease and more. Diseases caused by Fusarium, Pythium, and other soil-borne diseases severely impaired the growth of plants and caused no new roots, leading to severe death problems.
Third, the response measures If you want to solve the problem of slow growth of vegetables, first start with the root system, from top to bottom with the promotion, take root and strong seedlings.
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. The effect of stimulating rooting can be achieved by supplementing Bacillus spp. to improve the growth environment around the roots; at the same time, boron fertilizer is added to promote the growth 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. By means of physical, biological and agricultural comprehensive measures, the soil is loosened, the soil is changed into a granule structure, and rooting is promoted.
4, foliage fertilizer to stimulate growth. Foliar Spray Ye Jiamei 1000 times + Jiayuan 500K Dihydrogen Chloride, spraying once every 5-7 days, even spraying 2-3 times, adding phosphorus and potassium fertilizers to the leaves while adding alginic acid, can also stimulate the rooting of vegetables It can also reduce the aging of vegetable leaves and make the vegetables grow faster.
In cultivation management, be sure to choose to water or spray medicine on sunny days. Watering should be done with a small amount of water, and no flooding can be used to prevent the ground temperature from falling too much.
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