Timely irrigation and timely drainage are necessary conditions for high quality and high yield of Taoyuan. The irrigation period, frequency and irrigation amount of peach trees are mainly determined by soil moisture, water demand in different growth stages of peach trees, rainfall and tree age, and fruit set. In addition, the peach fruit grows rapidly during the expansion period. At this time, if there is water shortage, the fruit is small in development and the yield is low. Therefore, water is not available in this period. But it should not be too much, too diligent, in case the fruit flavor fades. After harvesting the fruit, it is generally not necessary to irrigate the water in the autumn, and the soil should be properly droughted. Moderate drought is conducive to flower bud differentiation and branch maturity. If the water is too large, it will easily cause the autumn shoots to be long and unfavorable for flower formation. However, excessive drought requires proper watering to prevent the leaves from falling off early.
Watering is subject to weather conditions and is flexible. The method of irrigation can adopt disk irrigation, furrow irrigation, sprinkler irrigation, drip irrigation and the like. The specific method can be comprehensively considered according to local economic conditions, water source conditions, water conservancy facilities conditions and topography. When the young peach garden is dry, it can only water the tree tray. This method is simple and easy. It only needs to repair the water channel and the water raft, and it can be irrigated by water. The water is sufficient. However, this method is easy to destroy the soil structure, and the soil surface is easy to be knotted. The loss is serious. When the water source is insufficient, the wheel-shaped groove can be opened under the canopy projection, and the short ditch between the plants is connected. This method is more light than the flood irrigation and the soil destruction structure is lighter. Pipe laying underground and carrying out ground irrigation can save 50%-70% of water; it is especially recommended to use pipe irrigation such as drip irrigation or sprinkling, because this method not only saves water, but also has low requirements on topography and geomorphology, especially suitable for mountainous orchards. It is convenient to control the irrigation area, reduce the weed growth between rows, reduce the local air humidity, and reduce the occurrence of pests and diseases. Especially in the use of grass, covered orchards, it is best to use pipe irrigation.
The annual rainfall is mainly concentrated in July-August. Peach trees are fruit trees that are not resistant to cockroaches. The root system is extremely sensitive to flooding, while lightly inhibits growth, resulting in a decline in yield and quality. In addition, there are a large number of fallen leaves and even dead trees. Therefore, we must pay attention to the rainy season drainage work, especially in the peach orchards with more autumn rain, lower terrain and soil viscosity. The drainage ditch should be dug in advance so as to eliminate excess water in time and avoid causing damage. The basic construction of the orchard, to achieve dry energy pouring, sputum can be discharged, irrigation and irrigation combined, in order to achieve the goal of high yield and good harvest every year.
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