The causes and prevention methods of soybean lodging, what are the causes of soybean lodging?

In soybean planting, many friends are more "afraid" of lodging, because once lodging occurs, regardless of the severity of lodging, it will cause yield reduction, generally 20%-30%, and more than 50% in severe cases. So what is the cause of soybean lodging? How to prevent it? Let's get to know each other.

1. Weather causes

Soybean in the middle and late growth, plant growth is relatively high, if encountered extreme climate, such as strong wind and heavy rain, and the duration of time, so there will be lodging. Moreover, there was no way to encounter such a situation. He could only pray that the area of lodging would be smaller and the harm would be smaller.

2. Variety reasons

Lodging of soybean is related to its varieties. Some soybean varieties grow very high, but their stems are thin and weak, and their lodging resistance is weak. Lodging is easy to occur when planted on plots with sufficient fertilizer and water. And some varieties do not grow tall, but stem stout, lodging resistance is strong.

Prevention method: Therefore, according to the specific local conditions, reasonable selection of excellent Europe, such as general fertility conditions of the plot, you can choose a higher growth of varieties, and fertility conditions of the plot, you should choose a shorter growth of varieties. At the same time, we should select varieties with strong resistance, which has certain effect on preventing late lodging.

3. Planting density

When planting, the higher the planting density, the easier the lodging phenomenon occurs. The higher the density, the less the ventilation and air permeability in the field, and the roots of the plants are not deeply rooted, so it is easy to cause large-area lodging phenomenon.

Prevention method: pay attention to density when planting, not the more dense planting, the higher the yield, the result may be exactly the opposite, not only easy to lodging phenomenon, but also affect the yield. Therefore, reasonable close planting is the best. Generally, the specific number of plants per mu depends on soil fertility and climatic conditions. Generally, 15,000 plants can be planted per mu on plots with good fertilizer and water, and 25,000 plants with general fertilizer and water.

4. Partial application of nitrogen fertilizer

Nitrogen fertilizer can promote the growth and development of plants. Many farmers often apply nitrogen fertilizer when planting, while soybean itself will produce rhizobia, which has strong nitrogen fixation. Partial application of nitrogen fertilizer will make soybean grow vigorously and increase the probability of lodging.

Prevention methods: in planting to control the amount of nitrogen fertilizer, in the case of applying sufficient base fertilizer, do not apply nitrogen fertilizer when topdressing, in flowering topdressing, according to the growth of soybean reasonable topdressing nitrogen. Good growth should be applied less, about 5 kg per mu, at the same time, phosphorus and potassium fertilizer should be reasonably matched to improve fruit setting rate and increase yield.

The above is an introduction to the causes and prevention methods of soybean lodging. I hope it can help you. If you want to know more about it, please pay attention to us.