Method for determining appropriate intercropping distance between crops and fruit trees of fruit tree and crop composite system

Abstract

The invention discloses a method for determining an appropriate intercropping distance between crops and fruit trees of a fruit tree and crop composite system. The method is characterized in that the overground shade of the fruit tree and the underground competition of the crop and the fruit tree are considered as two independent parts, a crown width of a X-year fruit tree at the fruit tree and crop appropriate intercropping distance obtained by only considering the overground shade factor is set to L1, the fruit tree and crop appropriate intercropping distance obtained by only considering the underground competition factor is set to L2, the obtained final appropriate intercropping distance between the X-year fruit tree and the crop is set to L, and the L is equal to max{L1, L2}. The overground shade of the fruit tree takes the vertical projection area of the crown width of the fruit tree as a circle, the vertical protection area of the crown width of the fruit tree is used as the inappropriate crop planting area when the overground shade is considered, the underground competition of the crop and the fruit tree takes the horizontal distribution of fruit tree fine roots and the distribution of a crop root system as a circle, and the overlapping condition of the distribution area of the fruit tree fine roots and the distribution area of the crop root system cannot occur. The method has the advantage that the crown width of the fruit tree and the horizontal radius of the fine root growth change along with the age of the tree, and the characteristics of the crop root system are combined to determine the appropriate intercropping distance between the crop and the fruit tree of the fruit tree and crop composite system.

Description

technical field [0001] The invention relates to a method for determining the suitable intercropping distance between crops and fruit trees under the compound mode of fruit farming in the agroforestry system, in particular to a method for determining the suitable intercropping distance between the crops and the fruit trees in the fruit farming compound system in the loess area. Background technique [0002] Agroforestry is a dynamic, ecology-based natural resource management system that increases product diversification and yield for land users through agroforestry, silvopastoral and other land use types, and increases social, economic and environmental benefits. Realizing the sustainable development of the agroforestry system and giving full play to the functions of the agroforestry system will directly have a profound impact on the development of the ecological environment and social economy in this area. [0003] In the loess area, the climate is relatively dry, the preci...

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Problems solved by technology

[0007] It can be seen from this that there are certain defects in the existing method for determining the suitable intercropping distance of the fruit-grown compound system: (1) strong randomness, unable to determine the suitable intercropping distance scientifically and rationally; (2) the consideration factors are not comprehensive enough , measured only from the growth status and yield of crops, without taking into account the adverse effects of crops on fruit trees

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