Dwarf and close planting method of carya illinoensis on plateau mountain

Abstract

The invention discloses a dwarf and close planting method of carya illinoensis on a plateau mountain. The dwarf and close planting method of the carya illinoensis on the plateau mountain comprises thefollowing steps: (1) selecting a plantation: selecting the mountain with a slope of 10-20 degrees and an aspect of an east aspect, a west aspect or a south aspect for plantation building; (2) conducting graft seedling selection and planting density control: conducting afforestation by means of good-variety container graft seedlings of the carya illinoensis, wherein the age of the graft seedlingsis 2 years or above, and planting spacing is 3 m*5 m; (3) conducting fertilizer application: in autumn, conducting ditching on soil in a radial mode, applying an organic fertilizer, and applying a compound fertilizer in spring; (4) conducting management: selectively keeping 5-8 lateral branches on each trunk the next year after the graft seedlings are planted, and culturing a multi-bough open-center tree shape through comprehensive measures of branch pulling and branch twisting; (5) from the fourth year, applying paclobutrazol on soil from April to May; (6) supplementing trees with average newshoot length equal to or larger than 30 cm in the next year with paclobutrazol applied on the soil, applying urea on the soil from February to March every year, applying the compound fertilizer on the soil in June, conducting ditching in a radial mode in late October, and applying the organic fertilizer; (7) conducting pruning: conducting whip-back pruning on the trees from January to March everyyear; and (8) conducting interplanting: conducting interplanting in the plantation. Dwarf and close planting of the carya illinoensis on the plateau mountain is achieved, and a yield is raised.

Description

technical field [0001] The invention relates to the technical field of dense planting of pecans with thin shells in mountain areas, in particular to a method for dwarfing and dense planting of pecans with thin shells in plateau mountains. Background technique [0002] Thin shell hickory (Carya illinoensis K.Koch), also known as long hickory and American hickory, is native to the United States and Mexico. It belongs to the tall deciduous tree species of Juglandaceae Hickory. Tree species, nuts and their products have great market potential, high economic benefits for cultivation, and good prospects for promotion and development. Thin-shelled pecans grow vigorously and are tall. The average tree height of traditionally cultivated 10-year-old forests is 12.4m. The initial planting density is small, generally 8-10 plants / mu, and the amount in the early stage is low. The cumulative dry fruit yield of 10-year-old forests is 320kg / Under 1 mu, the canopy density of the forest will...

AI Technical Summary

Problems solved by technology

Thin-shelled pecans grow vigorously and are tall. The average tree height of traditionally cultivated 10-year-old forests is 12.4m. The initial planting density is small, generally 8-10 plants / mu, and the amount in the early stage is low. The cumulative dry fruit yield of 10-year-old forests is 320kg / mu Under 1 mu, the canopy density of the forest will be as high as 90% or more after 15 years, the ventilation and light transmission in the forest is poor, the branches in the inner chamber are dry, the fruiting part moves to the outside and upper part of the crown, and the distance from the ground is more than 5m, the fruit is difficult to harvest, there are many diseases and insect pests, and the yield Significantly decreased