Agro-meteorology in Taizhou in April 2006

I. Climatic profile

1. Temperature. This month's average monthly temperature is significantly higher than the same period of the calendar year, higher are more than 1.4 ℃, of which the average monthly temperature in Yuhuan is the third highest value for the same period in history, second only to the 17.8 ℃ in 1998 and 2002, 16.5 ℃, the extreme maximum temperature in addition to the coastal islands are more than 30 ℃, the highest for the Tiantai's 34.3 ℃ (4), the extreme minimum temperature are below 8.0 ℃, the coldest for the Tiantai 6.3 ℃ (16th).

2, precipitation. This month's precipitation than the same period in previous years is significantly less, less than 28.5%, of which Tiantai less than 53%, rain days than the same period in previous years is also significantly less.

3, sunshine. In addition to Yuhuan slightly less, the rest are more than the same period of the previous year.

Two, long-term weather forecast

1, the weather trend

It is expected that this month's rainfall is slightly more than normal, the rainy days are normal, and the average monthly temperature is close to normal. This month's rainfall is mainly concentrated in the second half of the month. May cold and warm air convergence activities are more frequent, the temperature changes are larger, prone to short-term thunderstorms, gusty winds, hail and other strong convective weather.

2, specific elements of the forecast

Monthly rainfall: 170 ~ 190 mm; monthly rainy days: 16 ~ 18 days; monthly average temperature: 20 ~ 21 ℃; monthly maximum temperature: 33 ~ 35 ℃.

Three, agriculture and weather

April is an important time to prepare for spring plowing, in the first half of the early rice cereal seed basic fall mud, cereal seed fall mud after the meteorological conditions have been very good, there is no intense strong convective weather, and not affected by the continuous rain and inverted spring cold and other weather effects, the growth of seedlings is robust. the first half of May is the city's early rice transplanting season, the localities should seize the opportunity of favorable weather, transplanting in a timely manner! Seedlings. Before transplanting, should be applied "starting fertilizer", planted after good field fertilizer management.

It is recommended to listen carefully to short-term weather forecasts from weather stations at all levels and pay attention to the defense against strong convective weather effects such as thunderstorms and gales, rainstorms and hailstorms. And strengthen the greenhouse vegetables, summer vegetable seedling management, timely ventilation, humidity, temperature control work.

Citrus. According to the Jiaojiang Meteorological Bureau of Agricultural Gas Branch staff observation, this year's citrus flowers are more, but deformed flowers are also more, the fruit will have a greater impact on the seating. Because of the first half of the temperature is significantly higher, generally higher 3 ~ 4 ℃, the process of fertility accelerated, and in the middle of a cold air impact, the process has become slow, but in general and the development process of the previous year is almost the same. May is the period of citrus fruit formation, but also citrus production of the key period, strengthen the integrated management is particularly important.

Poplar. Yangmei in mid-April on the end of the flowering, according to Xianju Meteorological Bureau of Agricultural Gas staff observation, now the fruit has 1cm or so, and the development process is faster than last year's 5 to 6 days.