Latest Tutorial on Early Rice Transplanting and Management Techniques
It is currently the period for early rice transplanting in the south. This year, the climate in southern China is very favorable for early rice transplanting, and this climate will continue for some time to come. In addition, the pandemic has been easing, so experts also suggest that farmer friends seize the time to carry out transplanting work, and they have also given guidance on early rice transplanting. Let's take a look together below.
1. Sow and raise seedlings at the right time
As temperatures rise, all regions should select early rice varieties suited to local conditions that are high-yielding, of good quality, strongly stress-resistant, and widely adaptable. Before sowing, preparations such as sunning the seeds, selecting seeds, soaking seeds, and accelerating germination should be done well. Areas with the conditions can adopt factory-based centralized seedling raising. When the daytime temperature is stable at 12°C, avoid rainy days and sow during a clear spell. In the middle and lower reaches of the Yangtze River, early rice sowing should be completed before Qingming as much as possible, while in South China, the main stems should take advantage of recent favorable weather to speed up seedling transplanting. For direct-seeded fields, close attention should be paid to weather changes, sowing should be done at the right time, and dead seedlings and rotten seedlings should be prevented.
2. Strengthen seedling management
⟦NL>Because the types of early rice seedling fields in the middle and lower reaches of the Yangtze River are diverse, and there are differences in seedling age or growth period in the seedling field, classified management of seedlings should be strengthened according to the actual local seedling conditions to ensure strong seedlings are transplanted into the field. For those using insulated seedling raising, ventilation should be carried out in a timely manner to prevent [damage] from occurring. When continuous high temperatures occur, the film should be uncovered in time for ventilation to avoid burning seedlings from high temperatures. In weather with long rain followed by sudden clearing, do not suddenly uncover the film or blindly apply quick-acting fertilizers such as urea. Ventilation and seedling hardening should be carried out first, then the film should be uncovered. The seedling bed should be sprinkled or irrigated with water while the film is being uncovered. When seedlings have one heart and one leaf, moisture should be maintained at this stage to strengthen seedlings and prevent excessive growth, while also paying attention to preventing diseases. At the two-leaf one-heart stage, ventilation and seedling hardening should be carried out to cultivate strong seedlings. At the three-leaf one-heart stage, uncover during the day and cover at night, and before transplanting apply a low-concentration urea solution.
3. Transplant at the right time
When the temperature is stable at 15°C, transplant rice during clear weather. In South China, strive to complete transplanting around Qingming, and spray a green-returning agent 5-7 days after transplanting. If it is a machine-transplanted field, improve the quality of field plowing and leveling. Before transplanting, the field should be settled. Achieve timely early transplanting, strive for shallow transplanting, and appropriately increase density. For hand-transplanted or throw-transplanted fields, ensure transplanting density and improve uniformity. For direct-seeded fields, strengthen field management according to sowing and seedling emergence conditions.
4. Strengthen post-transplanting management
During the tillering stage of early rice, apply tillering fertilizer well. In South China especially, fertilize early. Fields that have received the first tiller-promoting fertilizer should receive a good strong-tiller fertilizer to promote early growth and rapid development. For fields in the middle and lower reaches of the Yangtze River, basal fertilizer can be applied at 5-6 kg of pure nitrogen per mu. Apply tillering fertilizer well 5-7 days after transplanting, at 4-5 kg of urea per mu. At the same time, do a good job in [field] management, achieving shallow-water transplanting, shallow-water green returning, and moist conditions to promote tillering.
The above is an introduction to early rice transplanting and management techniques. We hope it can help you. To learn more related knowledge, please stay tuned to us.