Intercropping of fruit and potatoes

Intercropping of sweet potato refers to the cultivation of sweet potatoes by objective conditions such as the use of idle land and light and heat resources between the rows of young orchards or high branches for the purpose of intercropping. It can make the coordination of water and fertilizer, light and heat resources utilization and the control of weeds and weeds in the same conditions. The high input of water and fertilizer to fruit trees can increase the utilization rate of sweet potato resources, as well as its yield and quality. The cultivation of sweet potato, especially the cultivation of sweet potato in protected areas, inhibits the growth of weeds in the fruit trees, and is beneficial to the preservation of water and fertilizer in orchards.

In the intercropping of sweet potatoes, the focus must be on the introduction of sweet potato cultivation while not affecting the normal growth and development of fruit trees. The cultivation of sweet potatoes must achieve high yield, quality and efficiency, and must be coordinated with the growth of fruit trees, and have similarities and differences with conventional cultivation of sweet potatoes. The main technical contents are as follows: 1. Reasonable distribution of fruit and potato land: According to the age and growth potential of fruit trees, the proportion of land used for fruit and potatoes should be reasonably arranged. Take the pear tree of size 5×3m as an example: The new planting fruit circle can be used between 4m rows except for the drains and sidewalks between the rows of fruit trees. The 80-100cm ridge can be planted 4-5 ditch sweet potato, with the development of the crown of fruit trees shrinking the land of sweet potatoes year by year. At the beginning of fruiting, sweet potatoes only planted 2-3 furrows for easy management of fruit trees. Different tree vigors 6-7 years are appropriate hedging periods. Fast-growing fruit trees such as peaches, apricots, plums, etc., have small row spacing and early sealing lines, and the number of sweet potato lines should be reduced. In order to ensure the density of sweet potatoes, the spacing of sweet potatoes can be appropriately reduced to 70 cm when adult trees are used for high branch exchange. Suitable hedge period is 3-5 years. 2. Deep arable land, shallow ditch, and more fertilization: Increase the depth of arable land to 0,3m outside the root zone of fruit trees and increase the amount of basal fertilizer, and add 50kg (N) on the basis of 0.067ha 2 quality organic fertilizer. :P:K=8:7:10) Sweet potato compound fertilizer. When the ground mulch is covered and the ground mulch is insufficient, the mulching film must be made before the mulch film is poured. Sweet potato ridge height 20-25cm, ridge roof can be appropriately widened to facilitate the development of the root system. 3. Appropriately increase the density: by stabilizing the line spacing, narrowing the plant spacing (20-23cm), increasing the cutting density of sweetpotato 8-10%, and playing a coordinated relationship between the growth of sweetpotato pods and the erect growth of fruit trees, coordinating both the ground and the underground, different heights The spatial relationship and the time relationship of different growth peaks achieve double high yields. 4. Plastic film covering technology: The annual production of single-season potatoes is covered with a single layer, covered with 800-900mm×0, 005-0, and 008mm specifications. The early-maturing double-season potatoes are covered with double layers, and the double-layer covering is on the basis of single-layer covering, with additional scaffold arches spanning 2.7-4.5m. Film coverage is not only conducive to the protection of earthworms to alleviate the tension of groundwater resources, but also conducive to the comprehensive prevention and control of diseases and weeds. It is an important technical link for intercropping of sweet potato. 5. Reasonable distribution of varieties: When the early-maturing double-season potatoes or fruit trees are old, sweet potatoes are mainly selected for fast-growing early-maturing varieties, such as Yushu 10 (Red Heart King), which reduces the symbiotic period and the growth period of sweet potato, which is conducive to the realization of double-season cultivation. The late-maturing cultivation and the younger ones are dominated by high-quality and high-product varieties, such as "Remaining 138". Special cultivation depends on the use of different varieties of Jingshu 1-7, 190 and Other varieties, respectively, according to the type of grilled food, fruit, starch, health, feed and other major categories of different application direction. 6. Timely Harvest: Due to the lack of strict time requirements for the ripening and harvesting of sweet potatoes, as long as the tubers are formed and have a certain yield, they can be harvested. As a commodity production, it can be harvested at any time based on market information. Intercropping of sweet potatoes, sweet potatoes should pay attention to early harvest. Early harvest can reduce damage to fruit trees, leaves, roots and roots, and play a role in maintaining fruit trees.

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