The latest planting technique for obtaining high yields by transplanting rice earlier
Rice is the main food crop in our country, with its output accounting for about half of our country's total grain output. The abundance or shortfall of rice yields directly affects the annual grain output. To strive for high and stable rice yields, timely early transplanting within the optimal seasonal period is a very important link.
Advantages of timely early transplanting of rice
1. Timely early transplanting of rice makes full use of abundant light and temperature resources
May is the end of the dry season in Yunnan and the beginning of the transition into the rainy season. During this period, sunlight is abundant, temperatures rise quickly, and light and heat resources are relatively rich. In most areas of our country, the annual extreme maximum temperature occurs in this stage before the rainy season begins. Timely early transplanting of rice can make full use of the precious period of the year with abundant sunshine and high temperatures, ensuring that after transplanting the seedlings have a sufficient vegetative growth period in the field to carry out photosynthesis and accumulate assimilates, laying the foundation for later reproductive growth. When rice is transplanted early at the right time, it grows under favorable light and temperature conditions, turns green quickly, tillers early, and produces many tillers, increasing the effective tillering rate and laying the foundation for high yields with more panicles.
2. Timely early transplanting of rice can avoid low-temperature cold damage in the later period
In most areas of our country, the average temperature in July reaches the annual maximum, and after August it begins to decline gradually. During the process of temperature decline, once a strong cold air mass from the north moves southward, when the temperature suddenly drops below the lower limit temperature for rice heading and flowering, it will cause great harm to rice, resulting in empty grains, reduced 1000-grain weight, and reduced yield. However, timely early transplanting within the optimal seasonal period can promote rice to emerge early and develop quickly, and can correspondingly advance the heading and flowering stage, to which rice is most sensitive to temperature, avoiding low-temperature damage during the yield formation period.
3. Timely early transplanting of rice can create conditions for a bumper harvest of two crops
Timely early transplanting of rice can make full use of abundant light and temperature resources, avoid low-temperature damage during the heading and flowering stage, and strive for high and stable yields. At the same time, early heading, early maturity, and early harvest of rice also reduce the seasonal conflict between harvesting and sowing for the subsequent crop, creating favorable conditions for striving for a bumper harvest of two crops.
When the temperature rises again and the daily average temperature stabilizes above 15°C, rice transplanting can begin.
Seize the seasonal period and transplant early
In late April, the average temperature across the province was above 15°C except in Deqin (6.8°C), Zhongdian (7°C), Lanping (12.1°C), Weixi (12.4°C), Ninglang (14.1°C), and Jianchuan (14.1°C).
As the saying goes: “Early transplanting gives grain, late transplanting gives grass”, “Early transplanting gives rice, late transplanting gives chaff”, “The seasonal period is a treasure, strive for every minute”, “Transplanting at Lixia gives high yield, transplanting at Xiaoman bends the waist, transplanting at Mangzhong is light and airy, transplanting at Xiazhi gives a bundle of grass”. Please seize the seasonal period in all areas and transplant the large-area rice as early as possible, laying a good foundation for this year's rice harvest.