In the summer of this year, the central and southern parts of China continued to experience high temperatures, and Jiangsu, Zhejiang, Shanghai, Henan, Anhui, and other places were seriously deprived of effective rainfall. As a result, the garden seedlings in these areas suffered from droughts and the growth of some trees was affected and even death occurred. At present, the drought situation in these areas has eased, and it has entered the autumn, and the trees have entered a new round of vigorous growth. After the high-temperature drought, we need to adopt effective conservation to reduce losses. After many years of practice, the author concluded a set of conservation measures after the high-temperature drought, for the reader's reference. After the watering drought, the first priority is watering, but how to water it is very particular about it. Drought causes severe water shortage in the soil, and the moisture in the tree body is insufficient for transpiration. At this time, watering the trees must follow the principle of gradual and orderly growth, followed by a small amount of water, followed by a small amount of water, followed by irrigating the water and gradually increasing the amount of soil. To restore the normal structure, conditions can use micro-spraying or drip irrigation, so that watering is not only well-watered, but also conducive to plant absorption, which is very beneficial to plant growth. In the following time, attention should be paid to maintaining the soil moisture, and measures such as cultivating the soil and covering the soil with plugs can be adopted to reduce the evaporation of water. In order to allow better and faster penetration of moisture into deeper soils, the trees should also be rigged before watering. In order to increase the water absorption of the roots, the smaller tree holes can also be expanded to increase the exposure. The amount of water. For continued drought in the fall, we should continue to water, but the amount of watering should adhere to several principles, one is to maintain the state of the soil most suitable; second is that the leaves of trees are not wilting, the leaves are normal, the new shoot color is green, not Tips are appropriate; Third, it is advisable that trees do not fall out of shape. For drought relief, there is normal rainfall, but no longer watering, but also to prevent the fall of autumn, after the heavy rain, for some trees that are not able to withstand flooding should be promptly to eliminate the accumulation of water in the tree points to prevent water rot. Drought and summer drought will affect the growth of trees. After autumn, the temperature is cool, and the trees enter a vigorous growth period. Therefore, trees that have suffered drought should be fertilized properly to promote their growth and facilitate safe wintering. To fertilize trees in the fall, it is necessary to grasp one principle, even if it grows without being too long. The specific method is that when fertilizing, some nitrogen fertilizers and potassium fertilizers can be applied, and the ratio of the two is 1:3. In this way, the normal growth of trees can be achieved and the problems of insufficient vegetative growth of the shoots can be alleviated, and the excessive nitrogen fertilizers cannot be used. The branches of trees are so long that they affect safe wintering. The amount of fertilization should not be less, fertilizer can be applied deeper, and watering should be performed promptly after fertilization. At the end of autumn, anti-frozen water should be combined with the application of a farmyard manure. This fertilizer can be used in a variety of fertilizer application methods. For example, the heavy shrubs, such as nectarine and eucalyptus, may be closer to the trunk. Locally use some sesame butter slag, and it should be deep-applied, and then apply some of the fermented beef and horse manure, cattle horse dung can be directly sprinkled in the tree, shallow Shi is appropriate. This fertilization can not only effectively protect the trees from freezing damage, but also help the plants return to green bloom and spring growth in the coming year. Pruning through the hot summer months, combined with suffering from high temperatures and droughts. Some trees will show dead and dead branches and treetops. In the maintenance, dry dead shoots should be removed in time to dry the dead shoots. For sparse branches, piles should not be left and should be cut off from the root. For large wounds, paint should be applied. Diseases and Insect Pests After trees are damaged by drought, their growth is affected, their ability to resist pests and diseases is reduced, and they are vulnerable to pests and diseases. Therefore, the prevention of pests and diseases should be strengthened. Overall, dry weather has relatively few contagious diseases, and locusts and other sucking pests are more serious. For the prevention and control of pests and diseases, the first symptomatic treatment, due to the appropriate temperature in the fall, will breed some diseases or pests, so timely in the autumn to prevent and control the pests and diseases that have already occurred, but also to be completely cured; second to take preventive measures, for some In the autumn, diseases and insect pests that are prone to occur must be actively taken while strengthening the water and fertilizer management of the trees. To prevent the occurrence of pests and diseases, spray protective agents may be used. At the end of the fall, we must remove the litter and weeds that have fallen from the green land in a timely manner and concentrate on burning or deep-buried disposal. Replanting some trees due to weak anti-drought ability, or death due to lack of management, after the death, they should be cleared in time, need to replant, according to the original design plan, arrange replanting plan. Replanting should pay attention to several issues. First, it is necessary to disinfect the original tree hole. You can use hole soil drying or spraying disinfectant disinfection measures; the second is to plant the leaves after the end of the fall, and plant the premature sap Stop the flow, will reduce the survival rate; Third, before the planting should be applied some fermented fermented cattle manure as a base fertilizer, base fertilizer should be fully mixed with the subsoil; Fourth, should be properly planted when planted, the appropriate deep-rooted plants can protect the root from freezing damage After planting, one should immediately pour water, and depending on the precipitation and temperature conditions in the year and the time of planting sooner or later, to determine whether to re-watering.
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