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Key Technical Points and Practical Methods for Soil Management in Jujube Orchards

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Inter-row cultivation, weed control, loosening the soil and preserving moisture: For newly planted jujube orchards, a 1 m wide tree row should be established after planting, and this tree row should be widened year by year as the canopy expands. In pure jujube orchards planted at high density, short-stemmed leguminous plants or melon and vegetable crops can generally be intercropped during the first three years after planting. In jujube orchards using the jujube-grain intercropping system, crop intercropping can be carried out over the long term. In this way, soil management for jujube trees during the first three years mainly focuses on the tree row area, and afterwards soil management should cover the whole orchard. The primary issue in soil management is eliminating weeds, because the growth of

Inter-row cultivation, weed control, loosening the soil and preserving moisture: For newly planted jujube orchards, a 1 m wide tree row should be established after planting, and this tree row should be widened year by year as the canopy expands. In pure jujube orchards planted at high density, short-stemmed leguminous plants or melon and vegetable crops can generally be intercropped during the first three years after planting. In jujube orchards using the jujube-grain intercropping system, crop intercropping can be carried out over the long term. In this way, soil management for jujube trees during the first three years mainly focuses on the tree row area, and afterwards soil management should cover the whole orchard. The primary issue in soil management is eliminating weeds, because the growth of weeds absorbs large amounts of water and nutrients from the soil. Therefore, too many weeds will directly affect the growth vigor of jujube trees. Another important part of soil management is loosening the soil in a timely manner, which reduces water evaporation and improves soil permeability. According to a report from the Shanxi Provincial Institute of Pomology, the soil moisture content and nitrate nitrogen content in clean-cultivated jujube orchards were both higher than those in neglected jujube orchards, root length increased by 16.5%, root weight increased by 56.8%, and the fruit-setting rate also increased to some extent.

According to another report, when weeds were overgrown during the dog days, plowing the soil 3 times and pressing the weeds under as green manure produced very significant results: the length of bearing shoots increased by 50% compared with the control, the number of bearing shoots sprouting from jujube spurs increased by 20%, and jujube fruit yield increased by 35%.

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