Latest Rice Management Techniques and Methods During the Heading and Flowering Stage Tutorial

The heading and flowering stage of rice is the most critical period in rice growth. It is related to the yield and quality of rice. If management is improper at this time, it may cause reduced yield or total crop failure. So how should rice be managed during the heading and flowering stage? Come to Qinnong Network to see the management techniques for rice during the heading and flowering stage.

1. Water management

The heading and flowering stage of rice is the period of greatest water demand, and rice is extremely sensitive to water at this time. The most important thing during this period is that it must not lack water. Be sure to ensure sufficient water, and maintain a water level of at least 3cm, so that rice can absorb and transport nutrients, increase photosynthesis, and promote spikelet differentiation. In low-temperature or high-temperature areas, the water level can be appropriately deepened to regulate temperature and avoid affecting heading due to high or low temperatures. During the flowering stage, long-term deep-water management cannot be used, as this will cause premature root senescence. Therefore, at this time, generally keep the soil moist and covered to promote robust rice growth.

2. Fertilization management

The heading and flowering stage of rice is related to yield and quality, so special attention should be paid when fertilizing. Spike fertilizer should be applied skillfully, with a combination of nitrogen, phosphorus, and potassium fertilizers, and fertilization should be based on rice variety, climate, soil, and other conditions. Generally, early-maturing varieties do not need spike fertilizer, while medium- and late-maturing varieties should be appropriately given spike fertilizer. When applying spike fertilizer, special attention should be paid to sandy soil with low fertility and poor fertilizer retention. In addition, if the "second black" at the booting stage is not obvious, flower-preserving fertilizer can be applied to improve the seed-setting rate. If symptoms such as yellowing appear on the leaves, foliar fertilizer can be supplemented to prevent premature leaf senescence and achieve the goal of high yield.

3. Prevention and control of diseases and insect pests

The prevention and control of diseases and insect pests during the heading and flowering stage of rice is essential. The main diseases are sheath blight, rice blast, rice false smut, bacterial leaf blight, etc. The main insect pests are rice planthopper, rice leaf roller, stem borer, etc. Combine agricultural control techniques with ecological control techniques. For diseases, give priority to prevention. For insect pests, methods such as trapping, catching, and the use of natural enemies can be adopted, and pesticides should be used as little as possible. Even when diseases and insect pests are severe and there is no alternative, high-efficiency and environmentally friendly pesticides should be selected, and the dosage and application methods should be mastered for treatment.

4. Rational use of pesticides

Generally, when using pesticides, if the recommended pesticides, suitable timing, and methods are used according to the instructions, pesticide residues will generally not be caused. However, if it is not done according to regulations and excessive or repeated application is used, pesticide residues will exceed the standard and harm people's health. During the heading and flowering stage of rice, rice is extremely sensitive to pesticides. If fungicides and insecticides with higher concentrations are sprayed unreasonably at this time, it will cause deformed growth and rice pollen abortion, leading to total crop failure. Therefore, the use of pesticides must strictly comply with the standards for safe use of pesticides and the guidelines for rational use of pesticides, and pesticides must be used rationally.

The above are the management techniques for rice during the heading and flowering stage brought to you by Qinnong Network. We hope they can help you. To learn more about rice knowledge, please stay tuned to Qinnong Network.