Latest Field Management Techniques for Rice During the Jointing and Panicle Elongation Stage

Rice jointing occurs over a period of time around the peak tillering stage, and rice does not stop jointing growth until after it begins heading, so this stage is called the jointing and panicle elongation stage. This stage is extremely important for rice production and is related to changes in rice yield. Below, Qinong Net brings you the field management techniques for the jointing and panicle elongation stage of rice.

1. Scientific irrigation

During the jointing and panicle elongation stage, rice has an extremely high demand for water, especially during the meiosis stage, so sufficient water must be ensured in the field during the jointing and panicle elongation stage. However, this period is generally a high-temperature period, when microorganisms are active and the decomposition of organic matter accelerates, which causes the dissolved oxygen in the water body to be consumed rapidly, making it very easy for toxic substances to accumulate. Combined with oxygen deficiency, this inhibits the growth of the rice root system, so long-term deep-water irrigation is not advisable. Therefore, during this period, correct irrigation methods should be mastered. In the early jointing stage, water should be properly drained to sun the field, controlling tillering and also helping with pest and disease control. In the later stage, a certain water depth should be maintained to meet growth needs, while during other periods it is sufficient to keep the soil moist or with a shallow layer of water.

2. Rational fertilization

During the jointing and panicle elongation stage, rice is in a period of rapid growth, so sufficient fertility is needed to promote smooth growth. Generally, fertilization during this period can be divided into flower-promoting fertilizer and flower-preserving fertilizer. Under normal circumstances, flower-promoting fertilizer is applied one month before heading, while flower-preserving fertilizer is applied half a month before heading, but this still depends on the growth condition of the rice, and fertilization must not be applied blindly. If the rice grows weakly in the early stage and the leaf color turns yellow, an appropriate amount of urea can be applied as flower-promoting fertilizer to increase the number of panicles. If the growth is good and the leaves are emerald green, there is no need to apply flower-promoting fertilizer, otherwise it will cause the phenomenon of excessive vegetative growth, delayed maturity and lodging. As for flower-preserving fertilizer, as long as the field growth is relatively normal, it needs to be applied. Generally, potassium sulfate and urea are applied to meet the growth needs of young panicles.

During this period, pest and disease control work is indispensable. The main diseases of rice during the jointing and panicle elongation stage are rice blast, bacterial leaf blight, striped leaf blight, rice false smut, etc. These diseases can be controlled by purchasing corresponding pesticides from agricultural supply supermarkets. The main insect pests include stem borers, planthoppers, etc., which can be sprayed and killed with general insecticides. In addition to pests and diseases, there are also rodent damage and various weeds. During the jointing and panicle elongation stage, weeds also grow vigorously. They seize the nutrients needed for rice growth, making the rice grow weakly. In addition, they increase the field density and easily trigger pests and diseases. If rodent damage is found during the jointing and panicle elongation stage, rodent-killing poison bait should be placed promptly for control, otherwise severe rodent damage can lead to total crop failure.

The above are the field management techniques for the jointing and panicle elongation stage of rice brought to you by Qinong Net. We hope they can help you. If you want to learn more about rice, please follow Qinong Net.