The latest rice can get high yield by transplanting earlier.

Rice is the main grain crop in China, and its yield accounts for about half of the total grain output in China. The abundance or deficiency of rice yield directly affects the annual grain output. To strive for high and stable yield of rice, early planting in the best season is a very important link.

Advantages of early rice planting

1. Early planting of rice at suitable stage can make full use of abundant light and temperature resources.

May is the beginning of Yunnan's transition from dry season to rainy season. During this period, there is sufficient light, the temperature rises rapidly, and the light and heat resources are relatively abundant. The annual extreme maximum temperature in most parts of China occurs before the beginning of rainy season. Rice can be planted early in due season, which can make full use of the valuable period of sunshine and high temperature in a year to ensure sufficient field vegetative growth period for photosynthesis and accumulation of assimilating substances after transplanting, laying a foundation for later reproductive growth. Rice can be planted early in due season. Under favorable conditions of light and temperature, it grows quickly, tillers early, tillers more, effective tiller rate increases, and lays a foundation for multi-panicle and high yield.

2. Early planting of rice at appropriate stage can avoid cold damage in late stage

The average temperature in most areas of China reaches the highest value of the whole year in July, and begins to decrease gradually after August. In the process of temperature decrease, once there is strong cold air from the north to the south, when the temperature drops sharply below the lower limit temperature of rice heading and flowering, it will cause great harm to rice, form empty grain, reduce 1000-grain weight, and lead to yield reduction. Early planting at the right time in the best season can promote early emergence and rapid development of rice, and can advance the heading and flowering stage of rice, which is most sensitive to temperature, and avoid the damage of low temperature in the yield formation stage.

3. Early planting of rice at the right time can create conditions for double harvest

Early rice planting at proper stage can make full use of abundant light and temperature resources, avoid low temperature damage at heading and flowering stage, and strive for high and stable yield. At the same time, early heading, early maturity and early harvest of rice reduce the seasonal contradiction of harvesting for the planting of later crops and create favorable conditions for striving for double harvest.

When the temperature rises to the daily average temperature above 15℃, seedling planting can be started.

Seize the season and transplant early

The average temperature in late April is higher than 15℃ except Deqin (6.8℃), Zhongdian (7℃), Lanping (12.1℃), Weixi (12.4℃), Ninglang (14.1℃) and Jianchuan (14.1℃).

As the saying goes: "early planting is grain, late planting is grass","early planting is rice, late planting is chaff","festival order is treasure, strive for minutes and minutes","high yield of seedlings planted in summer, small full planting seedlings pressure broken waist, mango planting seedlings light, summer solstice planting a bag of grass", please seize the festival order to transplant large areas of rice as soon as possible, for this year's rice harvest to lay a good foundation.