High yield can be obtained by transplanting rice earlier.

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

The advantages of timely and early planting of Rice

1. Early planting of rice at the right time can make full use of abundant light and temperature resources.

May is the beginning of the rainy season in Yunnan at the end of the dry season, during this period, the light is sufficient, the temperature rises rapidly, and the light and heat resources are abundant. The annual extreme maximum temperature in most parts of China appears at this stage before the beginning of the rainy season. Rice can be planted early and can make full use of the valuable period of more sunshine and high temperature in a year to ensure sufficient field vegetative growth period after transplanting, photosynthesis and accumulation of assimilation substances. It laid the foundation for the reproductive growth in the later stage, the rice was planted early and grew under favorable light and temperature conditions, the rice turned green quickly, the tiller was early, and there were many tillers, and the effective tillering rate increased, which laid the foundation for multi-panicle high yield.

2. Early planting of rice can avoid chilling injury in the later stage.

The average temperature in most parts of China reached the highest value of the whole year in July, and began to decline gradually after August. in the process of decline, once there is strong cold air in the north to the south, when the temperature suddenly drops below the lower limit temperature of rice heading and flowering, it will cause great harm to rice, forming empty chaff and reducing 1000-grain weight, resulting in a reduction in yield. Early planting in the best season can promote early emergence and rapid development of rice, advance the heading and flowering stage of rice, which is most sensitive to temperature, and avoid the harm of low temperature in the period of yield formation.

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

Early planting at suitable date can make full use of abundant light and temperature resources, avoid the harm of low temperature 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 reduced the seasonal contradiction of harvest for the planting of later crops, and created favorable conditions for double cropping and bumper harvest.

When the temperature returns to the daily average temperature of more than 15 ℃, we can start to plant seedlings.

Seize the season and transplant as soon as possible

The average temperature in late April was higher than 15 ℃ in all parts of the province 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 season is a treasure, strive for minutes and seconds", "the Beginning of Summer has a high yield of rice seedlings, Lesser Fullness of Grain transplants seedlings and breaks his waist, Grain in Beard transplants seedlings lightly, and the Summer Solstice transplants a bag of grass". Please plant a large area of rice as soon as possible to lay a good foundation for this year's rice harvest.