In recent years, the enthusiasm of farmers to grow grapes has been greatly improved, and the amount of fertilizer input has also increased accordingly. In fact, this phenomenon of “seeking to cause quantity†is not desirable, resulting in frequent fat damage and severe root burning. . Some unscientific fertilization methods often make the fruit farmers feel sorry. In this issue, we listed several wrong fertilization methods. If you plant grapes, what are the mistakes that you fell into?
Misunderstanding 1: When the new root of the vine has not grown, fertilize and apply too much fertilizer before the new root grows. On the one hand, it causes difficulty in water absorption of the seedlings, on the other hand, it makes it difficult for new roots to grow. In the case of high temperature, the ground part is dry and dead. . Before the new roots grow, it is only suitable for foliar supplement nutrition. You can use urea water 500 times liquid + Nonglaixin potassium dihydrogen phosphate 600 times liquid foliar spray, spray once every 5 days, even spray 3 times. When spraying fertilizer, it is best to choose when the afternoon is not too hot, and quickly spray.
Misunderstanding 2: Immediately after germination, a large amount of fertilization and pouring of fruit trees. If a large amount of fertilization and watering are selected, the soil temperature will be lower, the root absorption capacity will be worse, and the root system itself will be less and weaker. The fertilization of fruit trees is not long. At this time, it is necessary to loosen the soil, improve the ground temperature, and at the same time add nutrients to the foliage.
Misunderstanding 3: Treetops or whole trees are yellowed and blindly supplemented with iron. At this time, leaf iron supplementation is a blind behavior, which cannot replace the absorption of roots. It can only cure the symptoms, and at the same time, the amount of fertilizer is too large, and it is easy to burn roots. In this case, the first thing to solve is the problem of soil permeability and root respiration, and loosening and dehumidification are effective measures. Because the soil is good, the roots are good; if the roots are good, the trees are strong; if the trees are strong, the physiological diseases will be less, and the output will go up.
Misunderstanding 4: When drip irrigation, only the fertilizer is not dripped. When the individual orchard is drip, the fertilizer is added every time, and the fertilizer is stopped immediately after the fertilizer is dripped. Since the amount of water per drop is limited, the water on the surface evaporates, causing the fertilizer concentration in the soil to become higher and higher, and finally the root system is burned out. Water and fertilizer integration should be drip for 15 minutes before dropping the fertilizer.
Misunderstanding 5: Soils with severe acidification continue to apply acid fertilizer The pH of the soil affects the absorption of mineral elements by grape, and is closely related to the activity and population distribution of microorganisms, and has a great influence on the growth and development of grapes. Under acidic conditions, soil organic matter is decomposed, soil buffer capacity is reduced, soil compaction is caused, water permeability and permeability are deteriorated, and the growth and development of crops are seriously affected. If the soil has been acidified, it is not advisable to apply physiologically acidic fertilizers. It should be adjusted with physiological alkaline fertilizers and can be applied alone or in combination with other fertilizers.
Misunderstanding 6: When the temperature is high and the temperature is low, the temperature of fertilization is high, and the soil is not good. If the water is not timely after fertilization, the concentration of fertilizer absorbed by the root system is large, and the leaf edge is degraded after fertilization, which impairs the function of the leaves and affects photosynthesis. In turn, the quality and price of the fruit are affected, and the disease resistance of the leaves is also reduced. If it is rainy in the later stage, the disease of the leaves will be serious and even cause the leaves to fall early.
Misunderstanding 7: The balance of fertilizer application is wrong. Some fruit farmers believe that the application of nitrogen, phosphorus and potassium is 15 fertilizers, which is balanced fertilization. In fact, this is just a balanced ratio of fertilizers. There is no relationship with scientific balanced fertilization. It is a true balanced fertilization technique based on the application of different proportions of fertilizers in different growing seasons. When the leaves are hypertrophy and green, the appropriate amount of nitrogen fertilizer should be applied. The fruit coloring period is mainly phosphorus and potassium fertilizer. After the fruit is harvested, the appropriate amount of nitrogen, phosphorus and potassium compound fertilizer is applied to promote the early recovery of fruit trees and avoid premature aging.
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