The most worrying thing about planting soybeans is the phenomenon of pods. During the growth of soybeans, the soybeans in the dry season do not absorb the required nutrients, so they will fall into pods. So how do you prevent soybeans from falling into pods?
The application of flower pods and pods is the period of most fertilizer. In order to avoid adverse effects of nitrogen fertilizer on rhizobial knots, it is generally not recommended to use nitrogen fertilizer as seed fertilizer, base fertilizer and seed fertilizer. Appropriate amount, therefore, the application of appropriate amount of nitrogen fertilizer during flowering period has a good effect on promoting the growth and development of soybean in the late stage and reducing the loss of flower pods. Flower pod fertilizer is generally applied at the initial flowering stage, with 4-5 kg ​​of urea per acre and 7.5-10 kg of superphosphate. Apply a hole at a distance of about 5 cm from the root side of the soybean, and apply the soil to cover the fertilizer.
The external application of foliar fertilizer in the flower pod period generally uses 0.5 kg of urea per acre, 1.5 kg of superphosphate, 0.25 kg of potassium sulfate, 25 g of borax, 50 kg of water to extract the leachate, sprayed on the leaves, suitable for cloudy days or Spraying after 4 pm is beneficial to the preservation of the pods, the increase of the granules and the increase of the granules. Root spray fertilizer can be combined with disease prevention and pest control to improve labor efficiency.
Chemical regulation of the application of paclobutrazol in soybeans has strong plants, increased branching, shaping ideal plant types, and increasing yield. Soybean spraying of paclobutrazol is generally more than the limited pod-type variety of the infinite pod-forming variety. A suitable concentration of 0.01% to 0.02% of the diluent is used, and the optimum spraying period is before and after the initial flowering. The spraying concentration is suitably higher in the infinite pod-forming variety and the growing soybean, and the limited pod-forming variety and growth should be lower.
Autumn soybeans meet the autumn drought during the growing season, and the flower pods will not fall off when they are not needed. In the autumn drought, the activity of soybean rhizobium is weakened, and the fixed nitrogen is far from meeting the needs of the flowering stage. Therefore, rational fertilization is essential.
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