Some big cherries are picked from May to June, and the management of many big cherries after fruit picking in summer is easily overlooked. There are also some misunderstandings in the management of fertilization for big cherries in summer.
Mistake 1: No need to fertilize big cherries after picking
Usually, big cherries pay special attention to fertilization in spring and autumn. It is believed that spring fertilization can promote flowers and fruits, while fertilization in autumn can ensure the nutrient reserves of big cherries overwintering. In fact, summer fertilization for big cherries is also particularly important. At this time, it is an important period for cherry flower bud differentiation and disease and insect pest control. Summer fertilization can quickly restore tree vigor, promote flower bud differentiation, increase tree nutrient storage, and effectively prevent diseases and insect pests. The key to high yield and stable yield. Therefore, after picking the cherries, topdressing should be done immediately, so that a large amount of nutrients consumed by the growth of the tree can be supplemented in time to meet the nutrient requirements for flower bud formation and later growth stages.
Mistake 2: Apply a lot of nitrogen fertilizer after picking big cherries
Many fruit farmers mistakenly believe that nitrogen fertilizer can quickly restore tree vigor due to the quick effect of nitrogen fertilizer, so a large amount of nitrogen fertilizer must be applied after picking. However, nitrogen fertilizer is a double-edged sword. Especially in summer, the metabolism of the tree is vigorous. Excessive application of nitrogen fertilizer will cause the tree to grow wildly, and the spring shoots can not stop in time, which is not suitable for the formation of flower buds. In fact, it is better to apply a small amount of available nitrogen after fruit picking, and attention should be paid to the application of phosphate fertilizer. After the fruit is harvested, 1.5 kg of urea and 1 kg of diammonium phosphate are used per 100 kg of fruit. For trees with excessive vigor and less fruit, do not use or only use diammonium phosphate.
Mistake 3: Fertilize trees that don’t bear fruit
Many fruit farmers mistakenly believe that fruit trees that do not produce fruit in a young year are due to lack of nutrients, so they should be fertilized in summer together with the fruiting trees. In fact, young fruit trees are mostly caused by imbalanced nutrition. If fertilizers continue to be applied in summer, it will continue to aggravate the imbalance between vegetative growth and reproductive growth, which is not conducive to the formation of flower buds. Therefore, fertilization in summer should be based on the tree's vigor, and the amount of fertilizer should be reasonably arranged , Controlling the nutrient balance according to tree vigor is the key. Mistake 4: Flushing and fertilizing in summer can reduce watering
At present, drip irrigation systems have been used in many orchards, and the use of water-soluble quick-acting fertilizers is increasing, which provides convenience for production management. But the use of flushing water-soluble fertilizer is not the same as reducing the amount of watering. In June, the rainfall is insufficient, the temperature is high, and the soil moisture evaporates greatly. If water is not added in time after flushing and fertilization, it is easy to cause fertilizer damage, so special attention should be paid to water management after fruit picking and fertilization.
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