What does early rice mean?

Early rice refers to southern indica rice with early cultivation time and early maturity.

In July 2020, the key fields with high yield of early rice in Hengnan base passed the acceptance test, and the average yield of early rice per mu was 6 19.06 kg. On August 26, 2022, the National Bureau of Statistics released data. In 2022, the total output of early rice in China was 28123,000 tons (56.25 billion kilograms), an increase of 60% over 202 1 year.

According to the different sowing date, growth period and maturity period, rice can be divided into three categories: early rice, middle rice and late rice. Generally, the growth period is 90 ~ 120 days for early rice, 120 ~ 150 days for middle rice and170 days for late rice. Due to the different climatic conditions in different regions, their sowing dates and harvest seasons are also very different.

Rice produced by early rice is called early indica rice or early rice, which has poor taste and is generally used as industrial grain or reserve grain.

Determine the sowing date of early rice: when the temperature is stable at 12 to 14 degrees Celsius, it is the lowest temperature for rice germination and growth. Under natural conditions, the daily average temperature is higher than the daily average temperature and lower than the daily average temperature at night. The daily average temperature of 65438 00 degrees Celsius and 65438 02 degrees Celsius are the lowest temperatures for the growth of japonica rice and indica rice, respectively.

The suitable sowing date of early rice is: the daily average temperature is higher than 65438 02 degrees Celsius for three consecutive days, and the suitable sowing date in the Yangtze River basin is from late March to early April. With the increase of latitude and altitude and the decrease of temperature, the sowing date will be postponed. In production, we should pay attention to the weather forecast at that time, and seize the "cold tail and warm head" to grab sunny sowing. Take advantage of the sunny and warm weather after sowing, so that the roots of seeds can be planted early. When the cold air comes for the second time, the seedlings have taken root and become seedlings, and will not be damaged by low temperature, resulting in rotten seeds and buds.