The weather is getting hotter and the grapes just start to color and mature. At this time, the most easily encountered by fruit growers is the daily burning of grapes.
Experts from the fruit innovation team of Shandong Province, head of the fruit and vegetable video network, and Xu Mingju, director of the Feixian Fruit Research Institute, said that the disease of grape burn is concentrated in the ear. After the fruit was damaged, irregular light brown patches appeared on the epidermis, and the patches gradually expanded and slightly sunken. On the other hand, the ear of Japan burns softly and droops, weakening the resistance to anthrax and white rot.
It should be noted that grape sunburn is a non-invasive physiological disease. When the temperature exceeds 30°C, the air humidity is less than 40%, and the soil water content is less than 40%. At the same time, the soil permeability in the garden is poor, the plant results are too much, the tree vigor is weak, and the leaf curtain layer is not well developed, which will increase the incidence of sunburn. occur. In addition to these factors, a single application of fertilizer by fruit growers, organic fertilizer is insufficient, resulting in a serious lack of potassium in the soil, phosphorus, calcium, etc., but also easy to induce the disease.
Then, how should fruit growers do "defense"? Xu Mingju suggested that, first, fruit growers should strengthen their ear management. According to tree vigor, fertilizer and water conditions, the head should be carefully removed and the ears should be arranged. For medium-level gardens for fertilizer and water management, the yield of grapes per mu should be controlled at 1500-2000 kg and can be reasonably loaded.
Secondly, to increase soil organic matter, the content of soil organic matter in the concentrated layer of grape roots should be more than 1%. In the fertilization process, nitrogen fertilizer can not be excessive, but pay special attention to the application of potassium fertilizer, phosphate fertilizer and calcium fertilizer. In addition, based on the application of basal fertilizer to the soil, when the fruit grows and develops, potassium, phosphorus, and calcium fertilizers are sprayed on the leaves of the grape multiple times, and at the same time, sprayed polypeptin protein solution is added.
According to soil moisture conditions and weather conditions in the garden, during the sensitive period of sun burning, the fruit growers must also water in a timely manner so that the soil moisture content of the concentrated root layer of the grape is not less than 50-60% of the field water holding capacity. The soil is suitable.
In addition to the above-mentioned measures of “repairing sheepâ€, fruit growers should also pay attention to long-term scientific management. For example, science summer cuts are also critical. In the areas with frequent sunburn diseases in grapes, the topping can not be premature and overweight. The tips of the new shoots should be suitable for the mature leaves. Results The shoots were picked up 7-10 days after anthesis and 9-10 leaves were kept in each shoot. After the shoots were picked, the shoots were successively emerged and the subshoots below the ear were all removed. The subshoots above the ear remained 3 - 4 leaf topping and all secondary shoots removed.
If peasant friends are preparing to build a park, they should do a good job of “long-term defense†in advance. First, when constructing a garden, sandy loam or silt loam with good texture and good permeability should be selected. Second, we must choose suitable rack cultivation. In the garden where there is a lot of sunburn, you can use V-shaped frames. In addition, it is advisable to store 7 to 8 new shoots per square meter on the fence for grape cultivation.
It is worth mentioning that many farmers now love to use herbicides. In fact, the use of grass in orchards can improve the orchard's microclimate and avoid overheating. Therefore, grass is beneficial for reducing sunburn.
Experts from the fruit innovation team of Shandong Province, head of the fruit and vegetable video network, and Xu Mingju, director of the Feixian Fruit Research Institute, said that the disease of grape burn is concentrated in the ear. After the fruit was damaged, irregular light brown patches appeared on the epidermis, and the patches gradually expanded and slightly sunken. On the other hand, the ear of Japan burns softly and droops, weakening the resistance to anthrax and white rot.
It should be noted that grape sunburn is a non-invasive physiological disease. When the temperature exceeds 30°C, the air humidity is less than 40%, and the soil water content is less than 40%. At the same time, the soil permeability in the garden is poor, the plant results are too much, the tree vigor is weak, and the leaf curtain layer is not well developed, which will increase the incidence of sunburn. occur. In addition to these factors, a single application of fertilizer by fruit growers, organic fertilizer is insufficient, resulting in a serious lack of potassium in the soil, phosphorus, calcium, etc., but also easy to induce the disease.
Then, how should fruit growers do "defense"? Xu Mingju suggested that, first, fruit growers should strengthen their ear management. According to tree vigor, fertilizer and water conditions, the head should be carefully removed and the ears should be arranged. For medium-level gardens for fertilizer and water management, the yield of grapes per mu should be controlled at 1500-2000 kg and can be reasonably loaded.
Secondly, to increase soil organic matter, the content of soil organic matter in the concentrated layer of grape roots should be more than 1%. In the fertilization process, nitrogen fertilizer can not be excessive, but pay special attention to the application of potassium fertilizer, phosphate fertilizer and calcium fertilizer. In addition, based on the application of basal fertilizer to the soil, when the fruit grows and develops, potassium, phosphorus, and calcium fertilizers are sprayed on the leaves of the grape multiple times, and at the same time, sprayed polypeptin protein solution is added.
According to soil moisture conditions and weather conditions in the garden, during the sensitive period of sun burning, the fruit growers must also water in a timely manner so that the soil moisture content of the concentrated root layer of the grape is not less than 50-60% of the field water holding capacity. The soil is suitable.
In addition to the above-mentioned measures of “repairing sheepâ€, fruit growers should also pay attention to long-term scientific management. For example, science summer cuts are also critical. In the areas with frequent sunburn diseases in grapes, the topping can not be premature and overweight. The tips of the new shoots should be suitable for the mature leaves. Results The shoots were picked up 7-10 days after anthesis and 9-10 leaves were kept in each shoot. After the shoots were picked, the shoots were successively emerged and the subshoots below the ear were all removed. The subshoots above the ear remained 3 - 4 leaf topping and all secondary shoots removed.
If peasant friends are preparing to build a park, they should do a good job of “long-term defense†in advance. First, when constructing a garden, sandy loam or silt loam with good texture and good permeability should be selected. Second, we must choose suitable rack cultivation. In the garden where there is a lot of sunburn, you can use V-shaped frames. In addition, it is advisable to store 7 to 8 new shoots per square meter on the fence for grape cultivation.
It is worth mentioning that many farmers now love to use herbicides. In fact, the use of grass in orchards can improve the orchard's microclimate and avoid overheating. Therefore, grass is beneficial for reducing sunburn.
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