Apple fruit enlargement period, this period of positive value, high temperature, large evaporation, only suitable water, can promote fruit enlargement. In case of drought, the lack of soil moisture will affect the development of the fruit, resulting in a smaller fruit, reduced yield, and decreased quality. However, if there is too much water in the soil, it will cause long autumn shoots and loss of nutrients. If the accumulation of water takes a long time, it will affect the respiration of the root system, premature aging of the tree, and loss of the lower leaves. Therefore, in this period, we must master the water balance, control the excessive fluctuation of soil moisture, promote the normal development of fruits, and ensure high yield and quality.
First, drought and flooding In this period, in case of drought, irrigation should be timely, add water, promote fruit enlargement, increase production. The key technology of irrigation during this period is to grasp a reasonable amount of irrigation, and to control the amount of irrigation according to the soil texture and drought degree, it should not be too large, so as to avoid causing cracking and lower quality.
Second, the purpose of water-saving irrigation water-saving irrigation is to strictly control the amount of irrigation. In conditional orchards, water-saving irrigation shall be implemented by means of sprinkler irrigation, drip irrigation and infiltration. Water-saving irrigation has the characteristics of water saving and high water utilization. After the implementation of water-saving irrigation, not only can it protect the soil structure, but also make the root system in a relatively stable humidity and ventilation. Unconditional orchards should be filled with water by means of small furrow irrigation.
3. No matter which method is used to ensure drought protection or after rain, effective protection measures should be taken to ensure that the soil moisture is stable and adequately supplied, and soil moisture is prevented from fluctuating and fluctuating excessively, affecting fruit development. Its measures for safeguarding are: 1. Timely cultivating loose soil, timely cultivating tillage after irrigation and after rain, removing weeds, and reducing water consumption and evaporation loss. 2. To cover and protect the grasshopper, it can be used to implement wheat straw, cut green manure, and straw to cover the orchards before the drought. This not only reduces evaporation, but also lowers the ground temperature. 3. Cover with plastic film to ensure drought and prevent weeds.
IV. Timely Drainage The fruit growers in the production only pay attention to irrigation and neglect the misunderstanding of drainage. Apples have accumulated water in the orchards in the event of fruit bulge and afterwards, in the event of heavy rain or continuous rain. Root activity of fruit trees is limited, causing fruit cracking and early defoliation, affecting fruit quality and yield. It is necessary to drain the drain in time to prevent waterlogging. Gansu Farmers News
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