The flower pod period is the peak period of soybean uptake, and the plant needs a lot of nutrients. However, at this time, the root system began to enter the aging stage, the absorption function decreased relatively, and the utilization rate of soil topdressing was very low. Due to the large population, it was difficult to carry out soil topdressing. At this time, foliar spray is a good way to topdress. Foliar spray fertilizer not only can timely supplement the nutrients needed, delay leaf senescence, thereby promoting drum granules, increasing yield and improving quality, and has the advantages of quick fertilizer efficiency, low dosage, high utilization rate and simple application.
The specific method: per acre with 150 to 200 grams of potassium dihydrogen phosphate, 20 to 30 grams of ammonium molybdate, 75 to 100 grams of borax, 50 kg uniformly watered foliar spray. From the pod-forming period, spray once every 7 to 10 days, even spray 2 times, medium and low-yield thin land can be sprayed at the beginning of the initial flowering period, each time adding 0.5 to 1.0 kg of urea .
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