Causes and prevention of rice lodging

Reason: The greater the angle of lodging, the greater the impact on production. The rice is inverted and the stems are inverted. The roots are due to the fact that the rice is often in deep water, the roots are poorly developed, the hair roots are less, the roots are shallow, the roots are poorly supported, and the wind is invaded, it is easy to fall flat; The basal cell of the stalk has less cellulose content, thin cell wall, large cell gap, soft tissue structure, strong stalk, can not afford the upper part of the force, and has different degrees of lodging. The reason for lodging is analyzed from the aspect of cultivation management, mainly the plough layer. Shallow, irrigation is too deep, the transplanting is too dense, the root system is poorly developed, the group ventilation and light transmission conditions are not good, in addition, the water and fertilizer management is improper, one-sided re-application of nitrogen fertilizer, the tillering period is too prosperous, the jointing long-leaf stage leaf area is large, closed Early, causing the stalk base to be long.

Prevention and control: scientific irrigation, according to the different demand for water in different growth stages of rice, reasonable irrigation, implementation of flower water transplanting, inch water sputum, till the end of the sputum (3 to 5 days before ear differentiation), draining the sun for 7 to 10 days, such as The occurrence of low temperature weather below 17 °C, can fill more than 15 cm of water layer, deep water protection tires, which is an effective measure to prevent obstacles of low temperature and cold damage; reasonable close planting, is conducive to ventilation and light; scientific fertilization, moderate nitrogen application, increased phosphorus, Potassium fertilizer makes the stalk strong and prevents lodging.

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