Hot season orchard attention to drought prevention
High temperatures can easily cause atmospheric drying, increase crop water evaporation, reduce soil moisture, and appear drought. High temperature and drought will not only make the stomata of the fruit tree unclosed, but also will aggravate the loss of water evaporation from the leaves, which will directly affect the development of young fruit, which will lead to the phenomenon of physiological fruit drop. It will also reduce the photosynthesis of fruit trees, increase the respiratory intensity of fruit trees and reduce the synthesis and accumulation of organic nutrients. Often cause branches and fruit sunburn, increase powdery mildew, leafhopper, leaf miner and other pests. The defense measures are as follows: Fertilization It is necessary to pay attention to the management of fertilizer and water, prevent falling leaves and promote fruit enlargement. Fertilization should be dominated by organic fertilizers, with a small amount of nitrogen fertilizer and water pouring. General adult fruit trees per plant buried maturity of 50 kg of pig manure, it is best at the same time pouring the decomposed human excrement 15 to 20 kilograms, or urea 0.5 to 0.25 kilograms of water 15 to 20 kilograms and mix well after pouring into the fertilizer ditch. Phosphorus, potassium and trace elements in the orchard, but also the appropriate application of phosphorus and potassium fertilizers and trace elements, in order to increase the drought resistance of fruit trees, improve fruit yield and fruit quality. Tree cover grass In high temperature and drought, cover grass can reduce the ground temperature 7 °C or more, reduce the temperature difference between the upper and lower layers of the soil, prevent sunburn and control the growth of weeds, play a role in water conservation and soil conservation and improve drought protection. The tree cover is usually used for straw, wheat straw, dry weeds, etc., cut into 10 to 15 cm long, covering a height of 10 to 15 cm. Cover grass can be covered along the range of 1.5 to 2.5 meters. Shovel soil In the high temperature season, the orchard soil management should be strengthened, and the grassland should be thoroughly graved with grass and soil, and the weeds should be buried in the soil so as to eliminate the weeds competing with the fruit trees for water and nutrients. Pay attention to irrigation Irrigation is one of the important measures to prevent high temperature and drought from harming fruit trees. The fruit tree grows without water. According to tests, pear, apple, citrus, and sweet grapefruit can evaporate 40 grams of water per square meter per hour. If less than 10 grams of water, it will cause drought damage. In case of excessive dryness of the soil, the leaves appear curly yellow and should be timely watered or watered to prevent high temperature and drought damage the fruit trees. The irrigation time should be completed from the evening to the end of the morning, sunny days generally once every 7 to 10 days irrigation once, stop the irrigation in case of rain. Other measures Apply 2% lime emulsion to the canopy, or increase the amount of lime when spraying Bordeaux multi-fluid; whiten the trunk, reduce the temperature by reflection, and prevent sunburn; check the bagged fruit, open and increase the vent hole, and lower the temperature inside the bag to ensure Young fruit growth and development. Nucleic acid extractor is an instrument that uses matching nucleic acid extraction reagents to automatically complete specimen nucleic acid extraction. It is widely used in various fields such as the Center for Disease Control, clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbiological testing, food safety testing, animal husbandry and molecular biology research. automatic nucleic acid extractor,DNA extractor,RNA extracting machine,dna extraction equipment,rna extraction equipment Shenzhen Uni-medica Technology Co.,Ltd , https://www.unimed-global.com