Basic characteristics of soil in High-yielding Orchard
soil is the basis for fruit trees to survive. The soil of high-yield orchard generally has the following characteristics: deep soil layer, loose soil, living soil layer with a certain thickness (more than 60 cm), high content of soil organic matter, strong ability of water retention and fertilizer supply.
walnut is a deep-rooted tree species. The concentrated distribution layer of the root system is 20 ~ 60 cm below the ground, and the thickness of the soil layer is generally required to be more than 1 meter, in order to ensure the normal growth of the root system and the tree. The environmental conditions of deep and loose soil are conducive to the root development of walnut, which can promote aboveground growth and achieve the purpose of high yield and high quality.
The picture shows walnut
The high content of soil organic matter in is another important feature of high-yielding orchards. In the orchard with high content of organic matter, the soil microbial activity is exuberant, the soil aggregate structure is good, the corresponding effective nutrient content is also higher, and the ability of water retention and fertilizer supply is strong, which is beneficial to the absorption and utilization of nutrients by the root system of fruit trees. it creates good nutritional conditions for realizing high yield and high quality of fruit trees. High-yield and high-quality orchards require soil organic matter content of more than 2% to 3%, but at present, the organic matter content of most walnut orchards in China is less than 1%, so it is necessary to apply a large amount of high-quality organic fertilizer to improve soil organic matter content.
in a word, the main task of soil improvement in walnut orchard is to deepen the thickness of active soil layer, improve soil physical and chemical properties, increase the content of soil organic matter, expand the range of concentrated distribution layer of walnut root system and enhance the ability of root absorption and utilization of nutrients through various soil improvement measures.
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A Method of Soil Management in Walnut Orchard
Grass-growing in orchard is an advanced, practical and efficient soil management method, especially suitable for walnut orchard with serious soil erosion and poor soil, and also one of the important technical measures for producing green fruits and pollution-free fruits. Compared with other soil management methods,
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Remedial measures after Frost damage
1. Carry out artificial pollination in time if the late frost occurs early and the temperature drops below 0 °C, the flowers that are blooming or have been blooming are seriously injured by low temperature and have lost the ability of pollination, fertilization and fruit set. at this time, the unopened mid-and late-stage flowers should be treated after frost.
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