Different species of fruit trees, drought resistance is also different, should be based on the water demand and drought tolerance of different tree species to determine their suitable land plots. Among current cultivated tree species, pomegranates, dates, figs, and stone fruits have the strongest drought resistance; walnuts, plums, and grapes have moderate drought tolerance; apple, pear, and persimmon trees have the weakest drought resistance. The root drought resistance of rootstock has a great influence on the drought resistance of fruit trees. Therefore, the grafted varieties of drought resistant rootstocks should be selected in the dry cultivation of fruit trees. In the Qiao anvil, the mountain stator, Xifu Begonia, Xinjiang wild apple, Begonia fruit, Yamanashi, Yam peach, and mountain grape, and the M7 and MM106 in the short anvil are comparatively drought resistant.
First, to strengthen the cultivation and management to adopt reasonable cultivation techniques on the drought resistance of fruit trees also have an important role, including the following aspects: 1, a reasonable dense planting. In the condition of little rain and water shortage, the plant is usually planted at medium density with a spacing of 2.5-3 meters and a spacing of 4 meters. 2, reasonable pruning. The ideal tree type for drought resistance is the slender spindle type of free-spinning type. When trimming, it is necessary to make fewer wounds, and more protection piles are to be used. After trimming, the shearing oil or emollient oil should be used to timely apply scissors and saw wounds to prevent evaporation of sap. The implementation of flowers and fruits, reasonable load, limit production, reduce the invalid consumption of tree nutrients. 3, a reasonable fertilization. Increase investment, increase organic manure, change nitrogen-fertilizer fertilization habits, apply formula fertilization, increase tree vigor, and improve drought resistance of fruit trees is an effective measure to prevent evaporation of soil moisture. Deeply cultivating some legume green manure intercropping between orchards can serve as a consolidating fertilizer field. The role. 5. To build terraces and fish scale pits for orchards on mountainous, dry slopes and hilly lands, so as to increase the water use capacity of local soils and increase the drought resistance of fruit trees.
Second, the orchard covering orchard cover includes film cover and grass cover. Thin film coverage is generally performed in March-April of spring and can be covered or covered only under the tree disk when covered. The coating can reduce water evaporation and increase the moisture content of the rhizosphere soil. Orchard grass mulching is a new technology applied to orchard soil management in the early 1980s and is currently being widely promoted throughout the country. Orchard grass cover can be used throughout the year, preferably in summer (May). To promote tree cover and grass cover, when the grass cover fresh cover is best to be used after the initial rot in the rainy season to use grass after a lot of pests inhabit grass, it should pay attention to spraying the grass, play a concentrated trapping effect. In the autumn, the fallen leaves and diseased branches should be cleared to prevent upper leaf disease, leaf miner, anthracnose, etc. from occurring. In addition, many plain areas have summarized and improved the orchard grass-mulching technology, ie summer grass cover, to prevent defoliation, leaf miner, anthracnose, etc. In addition, many plain areas have summarized and improved the orchard covering technique, that is, the tree trays (tree shrubs) covered with grass in autumn and autumn, and are planted every year in May. The amount of grass used per acre is about 1500 kg, and the thickness is kept at 5 cm. Left and right, cover to fall to the base fertilizer when turned to the ground.
Third, the hole storage fertilizer and water technology hole storage fertilizer film covering technology is simple, low investment, effective, generally can save fertilizer 30%, saving 70% -90%, in the soil is thin, water-free conditions of the hilly land The application effect is particularly significant, and it is an important technology for drought and water conservation in arid orchards.
First, to strengthen the cultivation and management to adopt reasonable cultivation techniques on the drought resistance of fruit trees also have an important role, including the following aspects: 1, a reasonable dense planting. In the condition of little rain and water shortage, the plant is usually planted at medium density with a spacing of 2.5-3 meters and a spacing of 4 meters. 2, reasonable pruning. The ideal tree type for drought resistance is the slender spindle type of free-spinning type. When trimming, it is necessary to make fewer wounds, and more protection piles are to be used. After trimming, the shearing oil or emollient oil should be used to timely apply scissors and saw wounds to prevent evaporation of sap. The implementation of flowers and fruits, reasonable load, limit production, reduce the invalid consumption of tree nutrients. 3, a reasonable fertilization. Increase investment, increase organic manure, change nitrogen-fertilizer fertilization habits, apply formula fertilization, increase tree vigor, and improve drought resistance of fruit trees is an effective measure to prevent evaporation of soil moisture. Deeply cultivating some legume green manure intercropping between orchards can serve as a consolidating fertilizer field. The role. 5. To build terraces and fish scale pits for orchards on mountainous, dry slopes and hilly lands, so as to increase the water use capacity of local soils and increase the drought resistance of fruit trees.
Second, the orchard covering orchard cover includes film cover and grass cover. Thin film coverage is generally performed in March-April of spring and can be covered or covered only under the tree disk when covered. The coating can reduce water evaporation and increase the moisture content of the rhizosphere soil. Orchard grass mulching is a new technology applied to orchard soil management in the early 1980s and is currently being widely promoted throughout the country. Orchard grass cover can be used throughout the year, preferably in summer (May). To promote tree cover and grass cover, when the grass cover fresh cover is best to be used after the initial rot in the rainy season to use grass after a lot of pests inhabit grass, it should pay attention to spraying the grass, play a concentrated trapping effect. In the autumn, the fallen leaves and diseased branches should be cleared to prevent upper leaf disease, leaf miner, anthracnose, etc. from occurring. In addition, many plain areas have summarized and improved the orchard grass-mulching technology, ie summer grass cover, to prevent defoliation, leaf miner, anthracnose, etc. In addition, many plain areas have summarized and improved the orchard covering technique, that is, the tree trays (tree shrubs) covered with grass in autumn and autumn, and are planted every year in May. The amount of grass used per acre is about 1500 kg, and the thickness is kept at 5 cm. Left and right, cover to fall to the base fertilizer when turned to the ground.
Third, the hole storage fertilizer and water technology hole storage fertilizer film covering technology is simple, low investment, effective, generally can save fertilizer 30%, saving 70% -90%, in the soil is thin, water-free conditions of the hilly land The application effect is particularly significant, and it is an important technology for drought and water conservation in arid orchards.
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