When do you transplant rice seedlings?

When the temperature of paddy mud is above 15℃, it is known that Heilongjiang Province is the northernmost and easternmost region in China, and the climate is also the coldest. The best time for transplanting rice seedlings here is "May 7th and 8th to May 20th". In the meantime, there is a proverb about transplanting seedlings called "sterile May seedlings", and transplanting seedlings in June is not allowed. The suitable temperature at tillering stage is above 20℃ per day. The average daily temperature at heading stage is about 30℃. Therefore, to plant rice, it is necessary to control the normal climate in each growth stage, which is beneficial to the normal growth and high yield of rice.

Besides, we only grow mid-season rice here. Cultivation begins every year before long summer 10 day, and can be harvested after beginning of autumn 10 day. Therefore, there is another agricultural proverb called "It turns yellow ten days after autumn", which says that rice turns yellow after beginning of autumn 10, which is a good time for people to harvest. However, the temperature requirement that is more suitable for rice seedlings to turn green quickly and have high seedling rate after transplanting is that the average temperature is above 10 degrees. Therefore, from the temperature conditions, the middle and late May is more suitable for rice transplanting.

The rice planting area in China is very extensive, with a difference of two or three thousand kilometers between north and south. The temperature and climate are different in different places, and the transplanting time is quite different. The difference in local order is about one or two months (that is, three or four solar terms). Generally speaking, the earliest transplanting time is Hainan Island, followed by the Pearl River Delta, and May 1 day-May 20th is the best time.

It depends on the climate in that place, so the planting time is different. We plant two crops here, so we can grow rice in the garden after Tomb-Sweeping Day. The place where I farm is offline in the second quarter and online in the third quarter. We are usually here around May 9th. The temperature stably passes 13 degrees. However, according to the weather forecast at that time, if there is a low temperature process, a layer of water should be applied in time to keep warm after transplanting.