Reasons and prevention of rice lodging

Reason: The greater the angle of lodging, the greater the impact on production. The roots of the rice fall down and the stems fall down. The roots are due to the fact that rice is often in deep water, with poor root development, less hair roots, shallow roots, and poor root support. It is prone to flat lodging when exposed to wind and rain; The basal cell has a low cellulose content, a thin cell wall, a large intercellular space, a soft tissue structure, a weak stem, and can not afford the upper strength, and the lodging occurs in different degrees. The reasons for lodging are analyzed from the aspects of cultivation and management, mainly ploughing. Shallow, too deep irrigation, too dense planting, poor root development, poor ventilation and light transmission conditions, improper management of water and fertilizer, one-sided application of nitrogen fertilizer, excessive progeny during childbirth, large leaf area during jointing and prolongation, and seal line As early as possible, the basal stems of the stalks are so long.

Prevention: Scientific irrigation, according to the different needs of water in different growth periods of rice, reasonable irrigation, the implementation of flower water transplanting, inch moisture, the end of tillering (3 to 5 days before spike differentiation), drainage drying field 7 to 10 days, such as In the low-temperature weather below 17°C, water layers of more than 15 cm can be poured, and deep water tire protection is an effective measure for defensive-type low-temperature chilling injury; reasonable dense planting is conducive to ventilation and light transmission; scientific fertilization, moderate nitrogen application, and increased phosphorus application, Potash fertilizer makes the stalk strong and prevents lodging.

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