What are the latest methods for promoting early maturity in rice?
Rice is a major food crop in our country, especially in the south where the staple food is rice. In rural areas, it is grown by every household and is an important source of household income. Many growers have been 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. This can raise the ground temperature and promote early maturity in rice. Generally, keeping the water layer at about 4-6 cm is sufficient. During the maturity stage of rice, as the temperature gradually drops, in order to raise the ground temperature, intermittent moist irrigation should be adopted, that is, irrigating 2-3 cm and then letting it dry naturally. When there is no water, irrigate shallowly again. This can increase soil permeability, enhance the vitality of the rice root system, raise the ground temperature, and also nourish the roots and strengthen the stems, extend the lifespan of the leaves, and promote early maturity in rice. When rice enters the late maturity stage, irrigation and drainage should be reasonably carried out according to the actual situation to increase yield.
2. Weeding and topdressing
Weeds on field ridges and along ditches should be removed promptly. For weeds remaining in the field, after the full heading stage, manual weeding should be carried out 1-2 times. This can increase field permeability, raise the ground temperature, and promote early maturity. In order to prevent stem lodging and promote full grains, reasonable topdressing should be carried out from the full heading stage to the grain filling stage, generally mainly with phosphorus and potassium fertilizers, or by spraying foliar fertilizer with relatively 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. For example, spraying brassinolide has a certain effect on promoting early maturity. It can promote cell elongation and division, and can also play a positive role in the growth potential of rice. Under normal circumstances, it can promote early maturity in rice by 5-10 days, depending on local conditions. Triacontanol or ethephon can also be sprayed at the heading stage and grain filling stage, which can also promote early maturity by about 2-3 days.
4. Raising water temperature
In areas with suitable conditions, plastic film can be used to cover the branch canals that carry irrigation water, thereby increasing the temperature of the irrigation water. After irrigation, this raises the water temperature in the field and also helps promote early maturity.
The above is an introduction to methods for promoting early maturity in rice. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.