What are the methods to promote early maturity in rice? A full analysis of practical technical points
Rice is a major grain crop in China, especially in the south where the staple food is rice. In rural areas, every household grows it, and it is an important source of family income. Many growers are asking how to promote early maturity in rice. Let's take a look together below.
1. Reasonable irrigation
From the full heading stage to the grain-filling stage of rice, shallow water should be applied frequently, as this can raise soil temperature and promote early maturity in rice. Generally, maintaining a water layer of about 4-6 cm is sufficient. During the rice maturity stage, as temperatures gradually decrease, in order to raise soil temperature, intermittent irrigation should be adopted to keep the soil moist, that is, irrigating 2-3 cm and letting it dry naturally, then shallow irrigation again when there is no water. This can increase soil permeability, boost the vitality of the rice root system, raise soil temperature, nourish the roots and strengthen the stems, extend leaf lifespan, and promote early maturity in rice. When rice enters the late maturity stage, irrigation and drainage should be reasonably managed according to the actual situation to increase yield.
2. Weeding and topdressing
Weeds on field ridges and along ditches should be thoroughly removed in a timely manner. For residual weeds in the field, manual weeding should be done 1-2 times after the full heading stage. This can increase field permeability, raise soil temperature, and promote early maturity. To prevent stem lodging and promote full grains, reasonable topdressing should be applied from the full heading stage to the grain-filling stage, generally with phosphorus and potassium fertilizers as the main component, or by spraying foliar fertilizer with high phosphorus and potassium content. This is beneficial for early maturity in rice, improves lodging resistance and seed-setting rate, increases grain weight, and has an obvious effect on increasing yield.
3. Application of plant growth additives
To promote early maturity, plant growth additives can be sprayed, such as brassinolide, which has a certain effect on promoting early maturity. It can promote cell elongation and division and can also have a positive effect on the potential of rice. Under normal circumstances, it can promote early maturity in rice by 5-10 days, depending on local conditions. Spraying alkanol or ethylene at the heading stage and grain-filling stage can also promote early maturity by about 2-3 days.
4. Increasing water temperature
In areas with the necessary conditions, plastic film can be used to cover irrigation branch canals, thereby raising the temperature of the irrigation water. After irrigation, the water temperature in the field is raised, which also helps promote early maturity.
The above is an introduction to methods for promoting early maturity in rice. We hope it helps you. To learn more related knowledge, please stay tuned to us.