The latest causes and control measures of soybean pods not full

Soybean is an important grain crop in China, but the phenomenon of large pod not full often occurs in the planting process, which seriously affects the yield and quality of soybean. So what is the reason for the large pods not being full? How to prevent it? Let's learn about it together with Xiaobian.

I. Reasons why large pods are not full

1. Insufficient nutrition in later stage

Soybean after flowering nutrient consumption is large, then do not timely topdressing, will lead to soybean after full flower nutrition deficiency, resulting in yellow leaves, short plants, resulting in pod is not solid.

2. Malnutrition

Excessive application of nitrogen fertilizer during fertilization will cause imbalance of carbon and nitrogen ratio, which will lead to higher plants, longer internodes, lush branches and leaves, fewer flowers and pods, empty pods and semi-shrivelled pods, and the maturity of beans will be delayed.

3. Long-term drought

When soybean blossoms, it will make soybean leaves wither and yellow for a long time in drought, which will lead to pod stop growing or even whole plant death. In the land with shallow tillage layer and water shortage, soybean pod failure is more serious.

4. Cold damage

Late sowing or late-maturing varieties, in late September to early October, are still flowering plots, because the autumn temperature drops, leaf photosynthesis weakened, young pod development will also stop, resulting in pod not full.

5. Diseases and pests

Summer and autumn is the peak period of soybean virus disease, virus disease will make leaves shrink, young pods deformed, soybean fruit borer damage caused by empty pods.

6, light and temperature are not coordinated

In the low altitude area, under the condition of long day and high temperature from July to August, the long day delayed the development of soybean seeds, while the high temperature promoted the rapid development and aging of soybean pods, resulting in more flowers and pods but no seeds.

II. Prevention and control measures

First of all, according to the climatic characteristics of different regions, select suitable varieties to strive for high yield; then according to the changes in light and temperature in different regions, select suitable varieties. Field management should be strengthened, and proper watering should be done in time to meet the water demand of soybean growth and development. In order to change the habit of planting soybean without fertilization, scientific formula fertilization should be carried out according to the law of soybean fertilizer requirement. If fertilizer deficiency occurs in the middle and late stages, foliar fertilizer can be sprayed to supplement nutrients, so as to avoid lack of premature aging. The prevention and control of pests and diseases should be paid attention to, and timely prevention and control of pests and diseases should be found to avoid the spread of diseases.

The above is the introduction of prevention and control measures for the reasons why the big pods are not full. I hope it can help you. If you want to know more about it, please pay attention to us.