Rapeseed flowers in the south open in spring, usually concentrated in March and April of the solar calendar. According to the National Agricultural Information Center, it is different in every part of China due to the difference in light and heat. The farther north you go, the farther back the month the canola flowers bloom, and in the north, it doesn't even bloom until July in Menyuan County, Qinghai Province.

From the beginning of July every year, the season of rapeseed blossoms is in full bloom here, which runs from July 5 to 25, with the best time to bloom being from July 10 to 20.

The flowering period of rapeseed flowers in each province is as follows:

1, Yunnan Luoping rapeseed flowers bloom in February and March;

2, Guangxi Qingyuan rapeseed flowers bloom in February and March;

3, Jiangxi Wuyuan rapeseed flowers bloom in March and April;

4, Guiyang rapeseed flowers bloom in March and April;

5, Hanzhong rapeseed flowers bloom in April;

6, Jiangnan rapeseed blossoms in April;

7, Beijing Beijing suburban rapeseed blossoms in May;

8, Xinjiang Ili rapeseed blossoms in June;

9, Qinghai Menyuan rapeseed blossoms in July.

In the blooming period to the final flowering period, if the early decline, the final flower early, leaf color tender green rapeseed, in the final flowering period before the adoption of foliar spray fertilizer approach, timely compensation for nutrients, it is recommended to use the sea meal Wo powder potassium dihydrogen phosphate, the effect is good, easy to absorb.