The quality of vegetable roots determines the strength of the plant, which determines the level of yield. There are many factors that affect the root system, but they usually have the greatest impact on the rhizosphere environment. The soil effect is the greatest. The organic matter content in the soil determines the fertility of the soil. Therefore, the primary task of the grower is to apply organic manure, increase organic matter content, increase soil fertility, increase soil aggregate structure, improve soil physical and chemical properties, and improve air permeability and water permeability. Well, keep the water and improve the capacity of fertilizer, more suitable for root elongation and the absorption of fertilizer and water. In order to improve the physical and chemical properties of soil, you can also use “sand in mud†for sandy soil, that is to say, sandy soil is mixed with clay. The famous name is “good odd†and you can also use “mixing sand in mud†to call “not too goodâ€. law". However, the effect is slightly inferior to the use of organic manure produced from livestock manure and straw. The second measure to improve the soil is deep turning. In combination with organic fertilizer, the depth of the vegetable field is increased by about 50 cm. The porosity of the soil is increased, and the cultivation layer is deepened. The soil layer becomes loose from the compaction, which is conducive to the extension of the root system to the depths, and can improve the drought resistance and resistance of the vegetables. Cold resistance. Therefore, it is imperative that vegetable growers change their own practices of relying on rotary cultivation. They must combine deep turning and rotary tilling. Since the depth of rotary tillage is only 15-18 cm, this is not enough for the growth and development of vegetables.
Fertilizers also have a great influence on the root system of vegetables. The use of farm organic fertilizer in large quantities is the most important, and vegetable farmers must grasp this general direction. One organic fertilizer is the most effective. It often contains almost all the nutrients needed for vegetables. Two fertilizers for a long time. After application, it works from colonization to harvesting. Fertilizers have only served a few days. In contrast, they are called "invisible to others." Three organic fertilizers can change the soil and make the soil produce a granule structure that greatly increases the content of organic matter. This is the basis of soil fertility. With this good foundation, “what kind of planting grows up! What kind of planting and harvesting, what kind of planting will yield good results.†The difference in planting vegetables is manifested on this basis. Organic fertilizers are used in small quantities. No matter how good the other measures are, it will not be enough. Shouguang vegetable growers claimed that the organic fertilizer used for mu was called “a handsome cover hundred uglyâ€, meaning that there is this article, other problems are solved, and the deficiency is also covered up. Fertilizers should be used in conjunction with organic fertilizers, and vegetables must not be dominated by chemical fertilizers. Chemical fertilizers are more nutritious and can supplement the nutritional content of basal fertilizers, or the specific needs of fertilizers for a given period of time. To pay attention to the complementarity of chemical fertilizers and organic fertilizers, pay attention to the supply ratio of various nutrient elements, can not take the evil way of chemical fertilizers. Fertilizers are often used as top dressings. In addition to the supplement of nitrogen, phosphorus, potassium, borax and other supplements in the use of trace elements should also pay attention, the amount should be treated differently according to the different growth and development of vegetables, but the amount should not be too much. The amount of fertilizer is often used to increase the salt content of water in the soil. If it reaches 0.3% or more, the vegetables will suffer damage, while the dry leaves, yellow leaves and red roots will be light, and the stems and leaves will be dry and dead due to chemical fertilizers. salt. The excessive use of chemical fertilizers will also cause soil compaction and damage to the soil structure. Therefore, the compound fertilizer is generally used at a rate of about 20 kg per mu, and about 10 kg of nitrogen and potassium fertilizers are sufficient for compound fertilizers.