Carya illinoensis container seedling water content management method

Abstract

The invention provides a carya illinoensis container seedling water content management method which comprises the following steps of watering by adopting a way of spray irrigation from upside before seedling emergence, and watering by adopting a way of soaking in a breeding pool after seedling emergence. According to the method provided by the invention, the matrix capillary action is utilized to moisten seedling root fields, the water content is fully utilized by plants except for being subjected to plant transpiration and surface evaporation, and the water can be saved by 30 percent compared with watering by fully adopting the way of spray irrigation from upside during the breeding process. According to the method, the container seedlings are watered uniformly and grow uniformly and evenly, and the seedling quality is remarkably improved. When the container seedlings cultured by the method provided by the invention are planted, the ground diameter and the plant height of the one-year-old seedlings can be respectively increased by about 32.7 percent and 16.5 percent compared with that of the seedlings watered by adopting the way of spray irrigation from upside; when the method provided by the invention is adopted, the bottom part of the container is soaked in water, and the root system on the bottom part is died from lack of oxygen, so that the lateral roots emergence is promoted, and compared with the way of spray irrigation from upside, the number of the first-order lateral roots can be increased by about 26.8 percent. The method provided by the invention can be widely applied in breeding the carya illinoensis seedlings.

Description

Technical field [0001] The invention relates to the technical field of agricultural planting irrigation, in particular to a method for water management of container seedlings of pecans. Background technique [0002] Caryaillinoensis (Wangenh.) K.Koch], also known as long pecan, is native to the Mississippi River basin in the United States and belongs to the deciduous tree of the pecan family in the Juglans family. Under the background of the development of woody grains and oils and the implementation of the timber reserve strategy in my country, the thin-shelled pecans, which are used for fruit, oil, and materials, are developing rapidly, and there is a planting boom in the middle and lower reaches of the Yangtze River, and the demand for seedlings has increased sharply. [0003] Rich-root thin-shell hickory container seedlings can solve the problems of low survival rate of bare-root seedlings and slow seedlings, improve the efficiency of orchard construction, and facilitate early ...

AI Technical Summary

Problems solved by technology

At present, container seedlings of thin-shelled hickory nuts generally adopt the upper sprinkler irrigation method to supply water, and the irrigation water is easily intercepted by the leaves, causing up to 50%-70% of water loss, resulting in a great waste of water resources; The problem of uneven moisture affects the quality of seedlings

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