How does this year's high temperature affect river crab breeding?Jiangsu Meteorological Release "Crab Map"

At 9:44 on September 23, Beijing time will usher in the autumnal aquisar, which means that the golden autumn season with full and fragrant melon fruit has arrived. Recently, the temperature has fallen significantly, and it can feel the coolness of autumn. On the night of the 22nd, Jiangsu will usher in cold air again. The temperature in the province will drop by 4-6 ° C. It is expected that the lowest temperature on the 24th is about 11 ° C in the northwest, 15-16 ° C along the river and southern Jiangsu, and about 13 ° C in other regions of about 13 ° C or so Essence This time the cold air has the opportunity to help the north of the Huaihe River take the lead in autumn, and the high autumn days are getting closer and closer.

The temperature in Nanjing on weekends has dropped significantly

On the 21st, there were many sky clouds in Nanjing, and the outdoor body was relatively cool and comfortable. The highest temperature in the city was 24 ° C to 25 ° C. According to the latest meteorological data analysis, the remaining days in Nanjing this week are clear weather, and it is advisable to get, dry, and wash the car.

The temperature in Nanjing from the 22nd to 23rd rose slightly, but from the 23rd, due to cold air, the highest temperature on the weekend will decline significantly. The temperature difference between day and night is increased, reminding everyone to adjust the dress according to the temperature change, and add a thin coat in the morning and evening.

In the autumnal equinox, the northern hemisphere is short and night, and the weather is getting colder. In the autumnal equinox season, the autumn is high in autumn from North China to the middle and lower reaches of the Yangtze River, at the time of the West China Autumn Rain, and the first frost and cold dew, the Yangtze River Basin basically completed the conversion of summer and autumn in the "autumn equinox" solar terms. At this time, the more frequent cold air meets south to meet the gradually decreased warm and humid air. The precipitation is frequent and the temperature decreases.

In the autumnal equinox, the average temperature in Nanjing dropped to 19.9 ° C. Under normal circumstances, Nanjing's autumn equinox has reached the season of autumn, which is the season of "high sky and clouds, autumn wind is cool".

According to statistics from China Weather Network, including Nanjing (September 25), Hefei (September 26), Wuhan (September 29), Chongqing (September 28), Changsha (September 28), Nanchang (10) May 6), Hangzhou (September 30), Shanghai (October 2) and other provincial capital -level cities at the annual autumn of the provincial capitals concentrated in autumn equinox.

The large -scale listing of river crabs is postponed until before and after National Day

This summer is the hottest summer since the meteorological record in 1961. In high temperature weather, water temperature is not high, waterweed is easy to rot, poor water quality, low solubility, etc., will cause slow crabs to grow and increase mortality. Crab farming generally occurs small heads, general reduction of production, and rising prices.

On the 21st, the Jiangsu aquaculture meteorological service team released this year's Jiangsu river crab listing time forecast. What are the focus of the river crab breeding meteorological service this year? When will Jiangsu river crabs go public on a large scale?

According to expert analysis, affected by high temperature weather, the large -scale listing time of river crabs this year will be postponed to Around National Day. However, there will be some differences in the specific listing time from southern Jiangsu to Huaibei. The Jiangsu aquaculture meteorological service team will predict the area and rivers and lakes. For example, Nanjing Gaochun is in mid -September and Kunshan Yangcheng Lake is the end of September.

The precipitation in the early and late September of September was slightly less, and the precipitation was slightly higher in the later period. The temperature was slightly higher but there was no high temperature day. The temperature difference between the day and night was large. The river crab will be in the last molting period. This molting is of great significance to the specifications, output, and benefits of river crabs. It is a critical period to make up for high temperature and drought hazards.

Yangtze Evening News / Zi Niu Journalist Yu Dandan

Edit: Qin Xiaoyi

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