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What are the main fertilization methods for walnut trees? A detailed explanation of key fertilization points
The walnut fertilization methods currently used in China are mainly two types: soil fertilization and foliar spraying. Soil fertilization can be carried out in combination with soil ploughing. In order to facilitate root absorption and utilization and maximize fertilizer efficiency, when applying soil fertilizer, the fertilizer must be placed in the concentrated distribution layer of the root system.
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What are the symptoms of nutrient deficiency and toxicity in walnut trees?
The key to scientific fertilization lies in accurately judging the surplus and deficiency of nutrient elements in the soil and in the tree's nutritional status. The basis for fertilization includes two aspects: morphological diagnosis and nutritional diagnosis. Morphological diagnosis is based on the external morphological characteristics of the fruit tree to preliminarily judge the abundance or deficiency of nutrient elements, and to guide
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A Detailed Explanation of the Fertilizer Requirements for the Growth and Development of Walnut Trees
Walnut trees like fertilizer, but the amount of fertilizer needed varies at different ages and different phenological periods. The fertilizer requirements of walnut differ at different ages. The individual development of a walnut tree can be divided into four stages, namely the young age period, the early fruiting period, the full fruiting period and the aging period. In the young age period,
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What nutrients does a walnut tree need for growth and development?
The growth and development of fruit trees require two major categories of nutrients: one is organic nutrition, including amino acids, proteins, sugars and phospholipids, etc., accounting for 90%-95% of the total dry matter of the tree, all of which are directly or indirectly synthesized by photosynthesis, which shows that photosynthesis is the fruit
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What are the basic characteristics of the soil in high-yield orchards
Soil is the foundation on which fruit trees depend for survival. The soil of a high-yield orchard generally has the following characteristics: a deep soil layer, loose soil, an active soil layer of a certain thickness (over 60 cm), a high soil organic matter content, and a strong capacity for water retention and nutrient supply. Walnut is a deep-rooted tree
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What measures are there to prevent frost damage during the flowering period of walnut trees?
1. Choose suitable sites and varieties. Refer to the results of local agroclimatic zoning, rationally plan the industry layout, and choose favorable terrain that is not prone to cold air accumulation, to resist and avoid the harm of low-temperature frost. Generally, cold air tends to gather in valleys or low-lying areas, often causing frost, so
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The significance and methods of thinning male flowers (male flower thinning) on walnut trees
Walnut trees produce a large number of male flowers, far more than needed for pollination, and the development of male flower buds consumes large amounts of water, sugars, amino acids and so on. Removing excess male flower buds from walnut trees is called male flower thinning. Thinning male flowers can save large amounts of water and nutrients for the development of female flowers, thereby
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What are the technical measures for flower and fruit thinning in walnut trees?
Flower and fruit thinning is a major technical measure for improving the yield and quality of walnut trees. It can save a large amount of nutrients and water, which not only benefits the development of the tree in the current year, improving the current year's nut yield and quality, but also benefits new shoot growth and flower bud differentiation, ensuring
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What causes flower and fruit drop in walnut trees
For most walnut varieties or types, flower drop is relatively mild and fruit drop is more severe, but there are also cases where flower drop is quite serious. The main reason why existing large walnut trees have low and unstable yields is severe flower and fruit drop. According to research by Wang Genjiu and others, the flower and fruit drop rate of walnuts is generally 40%-90%. Walnut flower and fruit drop
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Pruning Methods for Neglected Walnut Trees in Production Areas
In China's walnut production areas, many trees are managed extensively, harvested but not tended, rarely pruned, and left to grow naturally, becoming neglected trees. 1. Structural characteristics of neglected trees The general characteristics of such trees are numerous scaffold branches, disordered tree shape, bare inner canopy, dead small branches, poor ventilation and light penetration
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