The cause and Prevention of the formation of Soybean pods without fruiting

First, the cause of the pod is unfruitful.

1. Improper selection of varieties or planting system. Generally speaking, the late-maturing varieties with poor resistance induce the formation of pods due to the low temperature during filling, which seriously affects the filling speed. The content of boron in soil nutrients decreased sharply due to the continuous cropping of soybean. Because boron is an important trace element to promote the formation and growth of soybean pods, its lack of soybean pods leads to the failure of soybean pods. At the same time, the continuous cropping of soybean will aggravate the harm of soybean diseases and insect pests, which will lead to the phenomenon of pods and unfruiting.

2. Unreasonable cultivation measures. Sowing with iron stubble and sowing later will lead to the concentration of soybean roots in the upper layer of the soil, and the late drought will lead to pods and unfruiting. Untimely management at seedling stage, soil consolidation, weak grass seedlings are easy to induce pods and unfruitful. Excessive density will affect the ventilation and light transmission of soybean plants, thus weakening photosynthesis and aggravating this disaster. Insufficient application of N fertilizer caused soybean overgrowth, luxuriant branches and leaves, greedy green and late ripening, pods and unfruitful.

3. Bad climatic conditions. For example, there are more Rain Water in the growing period of soybean, and the root system is immersed in water for a long time, resulting in the weakening of root absorptive capacity, the slow growth of plants, and the inability to produce enough organic matter to enrich the pods, resulting in the phenomenon of unfruitful soybean pods. In the pod filling stage of soybean, drought, high temperature and low temperature will reduce the photosynthesis of soybean, increase respiration, produce less matter and consume more matter, resulting in unfruited soybean pods.

II. Preventive measures

1. Select high quality varieties and rotate crops reasonably. The selection of drought-resistant and waterlogging-resistant varieties is the basic method to reduce the phenomenon of pod sterility. Generally speaking, the mid-and early-maturing varieties with early flowering, concentrated florescence and faster bulging speed can be used as the first choice. Reasonable crop rotation can avoid one-sided unreasonable consumption of soil nutrients, reduce the harm of diseases and insect pests, and reduce the phenomenon of pods and unfruitiness.

2. Establish reasonable cultivation measures. Proper application of N fertilizer, increase of P fertilizer, cultivation of strong seedlings, early sowing and intensive cultivation at seedling stage, timely weeding and stubble, selection of suitable density according to different varieties, timely prevention and control of diseases and insect pests and other measures can reduce the occurrence of pods.

3. Fighting drought and drainage in time. Timely watering drought-resistant water during podding and seed filling period of soybean is an effective measure to prevent pods from being unfruitful. At the same time, in case of heavy rain, the stagnant water in the field should be discharged in time.