According to Xiaobian, rice lodging is a common phenomenon, which usually occurs in the middle and late stages of rice cultivation. However, if there is no reasonable management of rice lodging, it will cause serious losses and lead to the reduction of rice production. The growers will quickly follow the Huinong network. Look at the causes and preventive measures of rice lodging!
In the middle and late stages of rice cultivation, it is often caused by rice lodging to cause great losses to rice farmers. Rice lodging first affects yield, followed by rice quality, and then rice harvesting efficiency. Rice lodging is a special headache for rice farmers. It is necessary to carefully analyze the causes and take appropriate preventive measures.
Causes of rice lodging
1. Reasons for the variety. Some rice varieties themselves are weak and not resistant to lodging.
2. The plough layer is too shallow, the paddy field is not ploughed for a long time, the soil is compacted, and the root system is poorly developed, which is likely to cause lodging.
3. Straw is returned to the field too much, producing toxic and harmful gases, poisoning the root system, and easily causing lodging.
4. The dysplasia of roots in the muddy field is likely to cause rice lodging.
5. Long-term flooding does not dry the field, and the root system is underdeveloped, causing the rice to fall.
6. The application of tiller fertilizer is too late, and the fertilizer effect is in the jointing stage, which makes the bottom section of rice easy to cause lodging.
7. The application rate of nitrogen fertilizer in rice is too large, the potassium fertilizer is insufficient, and the plant growth is too high and too high to cause lodging.
8. Salt and alkali withdrawal is too early, prone to premature aging, causing lodging.
9. Rice deficiency and premature aging are likely to cause lodging.
10. Rice with severe pests such as rice stem borer, rice sheath blight, bacterial stem-based rot and sclerotinia disease is prone to lodging.
11. Ultra-strong winds can easily cause rice to fall.
Precaution
1. Choose a high-resistant product.
2. Turn the ground to 20 cm in the autumn and deepen the ploughing.
3. The application rate of total nitrogen fertilizer should not be too large, and the application of tiller fertilizer should not be too late.
4. Reduce the amount of straw returning to the field, the amount of straw returning should not exceed 30% of the total amount of straw, and timely drying the field to improve root activity.
5. Lasha changed soil or used bio-organic fertilizer to improve saline-alkali land and muddy fields.
6. Fertilization should pay attention to appropriate nitrogen reduction, phosphorus stabilization, potassium addition and supplementation of trace element fertilizers to improve the lodging resistance of plants.
7. Timely control of pests and diseases.
Rice is planted in the south of China. Therefore, the reasons for the lodging of rice in small series and the preventive measures are hoped to help the growers!
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