Lodging rice is prone to sheath blight. Drainage can reduce the occurrence of sheath blight and prevent rice ear germination and stem rot. Strictly control the irrigation times in the later period.

2. Slightly lodging rice can't help rice to bear fruit.

In the field where lodging is not serious, rice plants have strong automatic adjustment ability. After lodging for 3 ~ 5 days, the automatic adjustment of rice plants will make the leaves and panicle axes automatically tilt upward, so it is not necessary to hold the rice and stick it, to avoid unnecessary mechanical damage, and at the same time pay attention to maintaining good drainage in the field.

3, heavy lodging rice tied to save.

Rice lodging is serious, low-lying and wet paddy field, early support.

4. Spraying drugs and fertilizers

Spraying potassium dihydrogen phosphate in time after lodging can increase plant vitality and prevent premature aging.

Causes of rice lodging

1, various factors

Rice varieties with tall plants, long internodes and large curved leaves are prone to lodging. On the contrary, varieties with reasonable plant height, short internodes, thick stems, slender and upright leaves and good roots will basically not lodging.

2. Unreasonable fertilizer and water

Excessive application of nitrogen fertilizer and neglect of phosphate fertilizer, potash fertilizer, silicon fertilizer and other chemical fertilizers have led to excessive growth in the vegetative growth period of rice, too long plant internodes, early closure and too wide and too large leaves.

Irrigation in the field is too much and too deep, and irrigation time is too long. As a result, the rice has been soaked for a long time, resulting in long white plants, inflexible stems, premature lower leaves, weak roots and reduced lodging resistance of rice.

Long-term flooding of rice fields leads to poor soil aeration and the normal release of nutrients in the soil. There are many toxic and harmful substances in the soil, which affect the development of rice root system, reduce the ability of root system to fix soil and support, and increase the lodging probability of rice.

3. The transplanting density is unreasonable.

Too many transplanting holes per unit area or too many seedlings per hole, the ventilation effect of rice field is poor, the illumination is poor, the root system of rice plant can not develop normally, the plant grows weakly, the stem details are long, and lodging is easy to occur.

4. Shallow tillage and transplanting

The topsoil is too shallow, and the root system of rice is underdeveloped, so it can't be deeply rooted and can't firmly support the plants on the ground, which leads to lodging. The depth of transplanting is too shallow, which leads to the failure of rice to take root deeply and cause lodging.

5, pests and diseases

Sheath sheath blight, rice blast, rice planthopper, Chilo suppressalis and Chilo suppressalis all damage the stem tissue of rice plants. If pests and diseases are not prevented in time, rice will easily lodging.

6. Natural disasters

Summer is the rice harvest season in most parts of China, and there will be typhoons and heavy rains in this season. After rice enters maturity, it is easy to lodging in a large area.