In terms of vegetable production in protected areas, vegetable farmers are accustomed to paying attention to improving external environment conditions such as temperature, light, and gas. In fact, “the roots can be deeply rootedâ€, only by creating a root group that is developed and has strong vitality can it be truly The high yield and quality. Relevant experts believe that the promotion of "deep-rooted and leafy" crops should be done well:
First, deep-turning the soil and increasing farmer fertilization is the foundation for eliminating soil compaction and increasing living soil layers. At the same time as the deep plowing, a large number of farmyard manures are applied not only to provide nutrients for long-term and multi-element crops, but also to improve the soil structure, improve the physical and chemical properties of the soil, and provide good permeability and buffering capacity for the growth of vegetables. Strong soil conditions.
Second, the cultivation of multiple seedlings and protect the roots of the majority of vegetables, the basic root system is formed in the nursery period. During the nursery period, cultivating seedlings with well-developed root systems and protecting these root groups during the nursery process and planting and transplanting will not only facilitate the growth of seedlings, but also play an important role in the future growth and development. From the point of view of mulching, it is necessary to grow seedlings in containers such as nutrient bowls or paper bags. After planting, the "seedlings" can induce new roots and deep rooting.
Third, the scientific application of different fertilizers on the role of different fertilizers on the development of the root is not the same, such as: calcium directly affect the growth of root apical meristem, zinc determines the root tip growth rate, phosphorus can promote root cell division, proliferation and stretch. Understand this principle, regardless of seedbed fertilization, or cultivation of fertilization should pay attention to the application of superphosphate and zinc sulfate.
Fourth, pay attention to protect the root system of the roots in their lives will be due to low temperature, high temperature, salt accumulation, fat burning and mechanical damage and injury. At low ground temperature, roots and cold roots can occur. High temperatures can cause the roots to age too quickly. The high solution concentration of the soil will cause damage and inhibition of the apical and root hairs, so that the absorption capacity of the root system will be greatly reduced, and inappropriate fertilization or improper cultivation of loose soil may directly damage the root system. Therefore, in the greenhouse vegetable production, On the basis of deep turning to improve soil and organic fertilizer, timely planting, proper planting, timely covering and removal of plastic film, scientific fertilization and cultivating loose soil are all necessary measures to protect the root system.
Fifth, promptly promote the recovery of the root In the greenhouse vegetables suffered low temperature and other adverse environments, in order to promote root recovery as soon as possible, generally have to apply calcium, phosphorus, zinc compound fertilizer.
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