Appropriate control of fertilizer and water will not result in trees of suitable age, generally the tree vigor grows excessively. Therefore, in the supply of fertilizer and water, the principles of early promotion and later control should be mastered, and the growth in the early stage should not be prosperous, and the long-term greed in the later period should be kept.
The opening angle of the large branches can be pulled, braced, separated, pressed, connected, sawed, etc., so that the main, side branches and auxiliary branches can reach the standard angle, which is conducive to improving the lighting conditions, alleviating the branches, and promoting the medium and short branches. Into flowers.
Delayed pruning postpones winter pruning until after the shoots have grown to 5 cm before the new shoots grow. The method is basically the same as winter shears. But there are two points to note: one is that this method can only be carried out on Wangshu and Wangzhi; the second is that usually after two years of delayed pruning, Wangshu and Wangzhi can generally be relaxed and stabilized, and the third year should be transferred Into the normal winter pruning, otherwise it will weaken the tree vigor and branch vigor.
There are four types of nicking, nicking, ring peeling, ring cutting and reverse skinning. Scratching is to cut the top or bottom of the branches and buds with scissors; ring stripping is to strip the bark of a certain width; ring cutting is to use a knife edge to cut a part of the branch and stem for a week; upside down is to peel the ring The down bark of the bark is turned upside down and then stuck to the ring peel.
As far as possible, the practice of light-shearing and long-shearing shows that apple trees do not grow fast, thicken quickly, have a large amount of branch buds, and have a large crown. Shearing and re-cutting, the amount of cut is large, the amount of branches and buds is small, the weakening is large, and the result is late.
The method of cultivating twig group is suitable for age, but the cultivating twig group can be used more often, then the method is lighter, then the method is better. In addition, attention should be paid to keeping more flowers and fruits in order to promote the transformation of plants to normal results, and the effect is better.
Sparsely cutting over dense branches and timely removing densely grown branches, vigorous upright branches, inward branches, weak branches, long branches and competitive branches, etc., is conducive to improving light conditions, increasing nutrient accumulation, reducing nutrient consumption, and promoting flower bud formation.
Bending and pressing the head of the tree to reduce the strength of the tree head showing strong up and down, strong growth, and excessive height of the tree, it is best to bend and press the space on the north side of the canopy, the angle of the branches is 90 degrees, and fix it; The method of the head makes the central leader bend and extend.
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Diagnostic reagents can be divided into two categories: in vivo diagnostic reagents and in vitro diagnostic reagents. It is mostly a reagent for detection by the reaction between antigen and antibody.
A: Classification of in vitro diagnostic reagents:
1. In vitro biodiagnostic reagents managed as drugs include:
1. Blood type and tissue type reagents;
2. Microbial antigen, antibody and nucleic acid detection reagents;
3. Tumor marker reagents;
4. Immunohistochemistry and human tissue cell reagents;
5. Human genetic testing reagents;
6. Biochips;
7. Allergy diagnostic reagents.
2. In vitro reagents managed as medical devices include:
1. Clinical basic test reagents;
2. Clinical chemistry reagents;
3. Blood gas and electrolyte determination reagents;
4. Vitamin determination reagents;
5. Cell histochemical stains;
6. Autoimmune diagnostic reagents;
7. Microbiological test reagents.
B: According to medical test items, clinical diagnostic reagents can be roughly divided into clinical chemical test reagents, immunology and
Serological testing reagents, hematological and cytogenetic testing reagents, microbiological testing reagents, body fluid excretion
Detection reagents, genetic diagnosis reagents, etc. Among them, the market share of clinical chemistry
The largest, close to 34%; followed by the immunology market, accounting for about 29%. Novel immunodiagnostic reagents and genetic diagnostic tests
The reagent was developed in the late 1980s, and it is the most common diagnostic reagent for all current diagnostic reagents, regardless of technology or market.
The fastest growing product.
Urine Rapid Test Kit,Rapid Test Kit 6-Panel,Toxoplasma rapid test kits,Fecal Occult Blood Test
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