1. Grass grows underground. Roots of fruit trees are the most sensitive organs to external conditions. The most suitable temperature for root growth of most fruit trees is between 13°C and 26°C, and growth stops when they exceed 30°C or below 0°C. Tests have shown that the surface temperature of the orchard's orchard in summer is 3°C to 5°C lower than that of the clear farmland. Grass and grass cover create an ecologically stable layer for the roots, thereby prolonging the root growth time and promoting the absorption and synthesis of tree nutrients.
2. timely irrigation. From mid-July to early August, it is the longest period of high-temperature heat damage in the whole year. The timely and reasonable irrigation of apples, pears, peaches, and grapes will not only improve the soil water supply and temperature and humidity in the orchard, but also satisfy the water demand for transpiration and fruit enlargement, and alleviate the damage caused by drought and high temperature heat damage to fruit trees. . Irrigation should not flood irrigation, irrigation with small water is appropriate.
3. Tree water spray. When the temperature exceeds 35°C, the canopy can be sprayed with water to cool and humidify after 5pm to improve the orchard's microclimate and to relieve the damage of trees and fruits caused by high temperature and direct sunlight.
4. Take a protective net. There are bird-fighting and hail-prone areas, and a protective net can be constructed to prevent bird damage and hail damage, as well as reduce direct damage to fruits and trees.
5. Control pests. As the saying goes: The high-temperature and drylands are rampant, and there is a continuous outbreak of rain and rain. From the recent observations, apple red spider, two-leafhopper, apple leaf roller moth, pear hibiscus, grape thrips and other pests have aggravated the trend, we must pay attention to prevention and treatment.
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