What about the latest soybean pods? How to improve the pod setting rate of soybean

Soybean is cultivated all over China, and it is one of the most important economic oil crops in China. So far, it has been cultivated for 5000 years, but soybean blossoms less, pods are sparse, and even does not bear pods. What about the low podding rate of soybeans? Is there any way to increase the pod setting rate? Let's get to know it.

I. reasons for little or no podding of soybeans

1. The reason of variety. Some farmers may buy some unqualified seeds, which will lead to the low podding rate of soybean.

2. Seed loss. Many farmers tend to keep their own seeds, but the seeds are of different sizes and impurities. If the seeds are sown mechanically, the seeds may also be lost and will have a certain impact on pods.

3. It is not suitable for local planting. If the southern varieties are planted in the north, or if the northern varieties are planted in the south, the pod setting rate will be low. Because soybean is a short-day plant, if the light and temperature can not be satisfied, there will be no pods.

4. Planting is too dense. The field permeability is poor and the leaves interact with each other, which leads to the weakening of photosynthesis and the formation of no pods or less pods in soybean.

5. Excessive application of nitrogen fertilizer

The root system of soybean can produce rhizobium and supply nitrogen by itself. when the external nitrogen fertilizer is applied too much, it will flourish. If it is not controlled in time, it will be greedy and unfruitful, and it will appear if it does not bear pods.

6. The temperature is too high. When the soybean is in the stage of flowering and pollination, when the temperature exceeds 35 degrees, it will affect the maturity of flowering and pollination, either no pods or blighted pods. The same problem occurs when it is also below 15 degrees.

7. Drought and waterlogging. Before and after flowering, soybean is sensitive to water demand. If it is too dry, when the plant is short of water, it will grow slowly, resulting in podding difficulties. If there is water in the field, the root system can not breathe normally, and the growth will be inhibited.

8. Diseases and insect pests. There are not many diseases and insect pests in the flowering stage of soybean, such as bean pod borer, leaf roller, snail, downy mildew and so on.

2. How to improve the podding rate of soybean

First of all, we should pay attention to the selection of varieties, we must choose varieties suitable for local cultivation, such as temperature, humidity, growth period and so on, and try not to choose varieties that have not been planted locally. Soybean planting should not be too dense, otherwise its normal photosynthesis will be affected during flowering and pollination, resulting in flowering and pollination, resulting in a decrease in pod setting rate. The water management of soybean should keep up, and there will be drought before and after the flowering and pollination period, and the pod setting rate will also be reduced. in addition, if it rains continuously in summer and there is stagnant water in the field, the pod setting rate will be low. The fertilization of soybean is different from other crops, nitrogen fertilizer should not be too much, generally follow the fertilization principle of "suitable application of nitrogen fertilizer, increase of organic fertilizer, combined application of phosphorus and potassium fertilizer and micro-fertilizer". Diseases and insect pests have a great impact on soybean, especially before flowering, if the control of diseases and insect pests is not timely, the pod setting rate of soybean will also decrease. Cypermethrin, chlorpyrifos, Metalaxyl, Manganese Zinc, Chlorothalonil can be used to control diseases.

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