The weak vine is a very troublesome problem. Today, I will share with you how the vines are weak and how the vines are weak.
How is the vine weak?
1. The soil is compacted, the groundwater level is high, and the orchard is densely planted.
If all the above three items are occupied, the grape root system will certainly not be good, then the absorption quality of the root system will be poor, and the quality of the nutrient reserve will be poor. The nutrient reserve of the whole orchard is insufficient, and the growth of the grapes in the second year will certainly not be prosperous.
2. Root failure due to illness, insects, and deficiency.
Due to the disease: The most common grape root tube disease is the first root rot disease, the second root cancer. Root cancer is a bacterial disease. The main symptom is the formation of a relatively large tumor-like substance in the rhizome. Root rot is the root system due to the infestation of various diseases, the roots are black, gray, and the capillary roots rot and disappear. There is also a root-knot nematode, the whole root is like a pearl necklace, and a fine root is composed of a large and small small spherical material.
Insects: The first common in the north is the nodule. If there is a problem with the nodule in the orchard, the leaves will turn yellow when the spring is germinated. The second one is cockroach, golden worm, and ground tiger. In particular, a large amount of unfertilized cattle and sheep manure, especially sheep manure, is used. The fiber content is relatively high and it is most likely to breed these pests.
Due to deficiency: the most important factor in the deficiency of roots is calcium deficiency. If there is calcium deficiency, we will dig out the roots and see that there is basically no problem. If you look closely, you will find that the capillary roots are too short, too thick, and too thin. These are caused by calcium deficiency, which seems to be okay, but the quality of the capillary root is very poor.
The common manifestation of root failure caused by disease, insects and deficiency is: after spring germination, the leaves are yellow when they are unfolded, the new shoots are too fine, and the sprouts are extremely irregular. Regarding the problem of pests and diseases in the soil, it is currently a difficult problem in fruit trees.
Prevention and control of roots and stems
Root cancer is a bacterial disease. At present, there is no particularly good ingredient for root cancer. Here, we can only recommend a chlorobromoisocyanuric acid. This medicine is considered to be effective in preventing bacterial diseases. Better ingredients. It is found that which piece of cancer is more serious and can be diluted with 5% chlorobromoisocyanuric acid 600-800 times and then rooted. If the whole garden is more serious, and the individual thinks that there is no value for re-operation, and after the garden is destroyed, it is better to choose the grafted seedling of SO4 because its anti-root tumor disease effect is better.
Regarding root-knot nematodes and root rot, there are no effective agents, mainly using organic fertilizers, and controlling less use of chemical fertilizers to adjust the pH of the soil as long as the soil is not severely acidic and has good permeability. High organic matter content, the incidence of this disease is small. It has been suggested that the use of functional microbial fertilizer to control the disease of grape roots and stems is actually adding beneficial bacteria to the soil, and expecting beneficial bacteria to breed and inhibit harmful bacteria. However, after the microbes enter the soil, they depend on the organic matter in the soil. If the organic matter content in the soil is low, the microbial fertilizer alone can be used, and the bacteria can not survive if they do not eat after entering the soil.
Regarding the root tumors, cockroaches, and golden worms, the same method can be used: the roots are irrigated with thiamethoxam before germination, and the effective ingredient per acre is guaranteed to be about 200g. What is the concept? The cheapest one on the market is 25% water-dispersible granules. One kilogram of land is used for 1 kilogram. After the water is turned on, it is either a dropper or a flood irrigation, which is equivalent to pouring the medicine into the germination water. Moreover, the effect of thiamethoxam is better. After the root is absorbed, the agent can be transmitted to the ground through the root system to prevent the aphids, blind mites and other sucking mouthparts pests, but thiamethoxam is not effective against the tiger. For the effect of the tiger, it is recommended to use organic phosphorus granules, such as chlorpyrifos granules. This anti-gold worm has a general effect, but the anti-ground tiger effect is better.
3. The leaf curtain area is limited.
Either the leaves are too small and the synthetic nutrients are not enough. Or leave too much leaf and block each other. The following leaves do not see light, can not carry out photosynthesis, only consume nutrients; the above leaves can see light, although it can synthesize nutrients, but not enough for the following leaves. Fundamentally, nutrients are not stored. This involves a reasonable colonization problem. A requirement for colonization: the rack blades are full but not obscured.
4. The continuous load is too large, or the fertilizer is not timely.
It is clear that only the nutrients of four thousand pounds of fruit are provided, but the tree is required to hang up five or six kilograms of output, and the tree has been overdrawn for years, surely the tree is weak.
It is not appropriate to use fertilizer in time. After applying fertilizer to the fruit trees, the roots absorb these mineral elements and send them up to the leaves. The photosynthesis is used to convert the fertilizer into nutrients, and the nutrients are synthesized and sent to the roots. The roots are the reserves and distribution centers of nutrients, and the roots distribute nutrients to each. Organs, this process takes at least half a month, which means that it takes at least 10 days from the day when the roots are used for fertilizer, and it takes at least 10 days. This is why it is necessary to topdress in advance and use fertilizer in time.
5, winter frost damage.
In the winter of 15 years and the spring of 16 years, the quality of the leaves after the germination is basically unbearable.
These are the reasons why our common orchard is weak. The minimum requirement for ensuring the tree is to use the base fertilizer. The application time should be the earliest when the maximum temperature during the day falls below 30 degrees. Because the temperature is too high, the leaf stomata are closed, the photosynthesis is stopped, the fertilizer is used, and the nutrient is not converted. It takes about a month before the leaves to fall, because it takes at least a month for the nutrients to return completely to the fruit trees from the time you use fertilizer to the nutrients.
How to do the vine tree weak
The easiest and most effective way is to rush to supplement nutrients, where emphasis is on nutrients, not fertilizer. Because when we find that the tree is weak, there are basically few leaves, and it is difficult to convert it into nutrients with more fertilizer. But there is a class of substances that can be directly absorbed by plants after use. We call them classified fertilizers. After using it, there is no need to absorb the transformation, and the fruit tree can be used directly. Mainly divided into the following categories:
1, amino oligosaccharides
For example: If everyone is full and sitting in the room, the temperature is not cold or hot, everyone sends a bottle of glucose, after drinking it may have a feeling: there is no difference between drinking and not drinking. But if everyone goes out and runs for 5,000 meters, they will be out of breath. At this time, each person will send a bottle of glucose. After drinking it, they will obviously feel different. The recovery of physical strength is fast. This is the function of sugar substances. . Amino oligosaccharides can be directly absorbed and utilized by plants, directly releasing energy, directly maintaining and strengthening the growth ability of fruit trees. It is an energy-based substance. When the fruit grows weak, it can be used, and the growth of fruit trees can be enhanced. Therefore, amino oligosaccharides are used in carbohydrates.
2, amino acids
Amino acid fertilizers are used by many people. They not only promote the root system, but also enhance the ability of plants to resist adverse environments, especially the ability to resist freezing, while also strengthening the growth of plants. In addition, amino acids can be directly absorbed and utilized as high protein substances. There are currently two types of amino acids on the market: the first, deep-sea fish protein, imported from Norway, is expensive. It is an amino acid produced by fermentation of deep-sea fish. It is high in purity and rich in variety, but the cost is too high. The second type, many people use, a few thousand dollars a ton, this is generally formed by strong acid acidification of some animal hair, fur, etc., the quality is uneven, it is best to test with pH test paper before use, if The pH value is obviously around 4, it is not recommended, because the quality is too small, if you take the test, the amino acid content may be enough, but the amino acid quality is too small.
3, fulvic acid fertilizer
Divided into two categories: mineralized fulvic acid and biochemical fulvic acid.
Mineralized fulvic acid is generally extracted from weathered coal. The biggest function is to improve the soil. If the soil is relatively compact, the permeability is relatively poor. One ar of land uses 1-2 kg of pure mineralized fulvic acid, which can be effectively enhanced. Soil is breathable, but not too obvious in promoting plant growth.
Biochemical fulvic acid is a fulvic acid extracted from plants after decomposing sugar beet slag, sugar cane bagasse, and oil crops. The soil effect is generally improved, but it is used to promote roots, quickly replenish nutrients, and strengthen The effect of the tree is more prominent.
4, seaweed essence
Need to emphasize one point: seaweed is not seaweed or even alginic acid. China has not yet met the quality standards for seaweed essence at the national level, which means that the quality of seaweed essence is not managed by the Chinese government. The quality of products on the market can be imagined. As for the alginic acid fertilizers that many people say, it is important to know that alginic acid is a chemical raw material. It costs only a few hundred yuan a ton, and basically has no nutrient fertilizer function.
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