Today, there will be rain in Zhouqu County and Bailong River Basin in Gansu Province. It is expected that there will be thunderstorms on the 14th and 15th . The weather conditions make us feel particularly worried because it will increase the difficulty of search and rescue dredging. Continue to strengthen the prevention of geological disasters such as landslides and mudslides.
In the south, the high fever has not been retreated . Since the 8th , it has been tortured by high temperature, especially the crops in the ground, which are not covered, and are directly exposed by the sun. In the cotton fields of Anhui, agricultural technicians say this. The soil moisture is only about 52% , and the soil moisture content is generally required to be more than 60% , so that crops can be suitable for growth.
Today, most of the southern regions will also have high temperatures, and the high temperature intensity is very high. The highest temperature in most high temperature areas is above 37 degrees. On the 14th , the high temperature range in the south has not changed much, only in Hubei and Anhui. It is weakened; and it is expected that most of the south will be controlled by subtropical high pressure from 15 to 18 , and the high temperature will not subside. Like Changsha, from 16 to 18 , it will always have a high fever at 39 degrees.
Nowadays, when rice, corn, cotton and other crops are growing vigorously, they are continuously baked by high temperature. In order not to affect the harvest, the agricultural technology experts say this: it is necessary to pay close attention to soil moisture and drought changes, scientific water use, timely irrigation. To ensure the growth of large autumn crops. Artificial watering is indispensable. In some places, it is necessary to strengthen irrigation. It should be noted that the watering time is best to choose before 10:00 in the morning , or after 4 pm, watering in the afternoon high temperature period must be avoided.
The specific recommendations of the experts are as follows: for reference:
Irrigation and cooling can timely improve the microclimate in the field and reduce the temperature between plants by 1 °C ~ 2 °C. Dry crops can be sprayed directly onto the stems and leaves of the crops by sprinkler irrigation or sprayers to maintain the balance of water in the plants by cooling and humidifying. During the high temperature period, in some areas, rice is cooled in the morning, deep water is poured at noon, and the practice of running horse water in the evening is very effective.
Auxiliary pollination For cross-pollination crops such as corn and sorghum, artificial-assisted pollination methods using bamboo stalks or powder coating can be used to increase the amount of pollen falling on the stigma, increase the probability of pollination and fertilization, and reduce the high-temperature rate of seed setting. influences. According to the test, artificially assisted pollination increased the seed setting rate by 5% to 8% compared with natural pollination .
The urea and human urine, human urine, pig (bovine) urine, potassium dihydrogen phosphate aqueous solution and grass ash filter leachate are sprayed several times in the breakage period, heading stage and filling stage of the crop, and the amount of water is increased in an appropriate amount. It can increase the moisture content of the ear part of the plant, is conducive to cooling and humidification, and can provide the necessary water and nutrients to the leaf in a timely manner, promote the enrichment of the seed nutrient and improve the fullness.
Strengthen field management, rationally adjust water and fertilize fertilizers, improve the nutritional status of crops, and enhance the ability to withstand high temperature hazards. In the later stage, dry and wet wet management in the field should avoid water shortage and prevent roots from preserving leaves and increase grain weight . At the same time, increase the pest and disease prevention in the later stage. control. Do a good job in the prevention and control of pests and diseases such as rice leaf roller and late planthopper syndrome to prevent disasters.
For the orchard, irrigation can increase the water supply of the fruit trees or cover the straws of the tree trays, reduce the temperature to prevent evaporation of water, and also reduce the high temperature hazard.
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