A bogey and alkaline fertilizer mixed or simultaneous application Otherwise it will increase the nitrogen in urea to ammonia and volatilize In summer and autumn, urea and alkaline fertilizers should be staggered for 3 to 4 days, and winter and spring should be staggered for 7 to 8 days. Second bogey for seed dressing Urea as a seed fertilizer, will lose seed germination, but also endanger the seedlings At the same time, a high concentration of urea can destroy the protein structure of the seed and have toxic and inhibitory effects on the seed. Three taboos Urea is easily applied and easily consumed by weeds The best application depth of urea is 10 to 15 cm, and the fertilizer is applied to the soil so that the fertilizer is in a moist soil layer, which is conducive to the exertion of the fertilizer effect. Four bogey high concentration foliar spray If the concentration of foliar spraying solution is too large, the leaves will be burnt and the normal growth of the crop will be affected. Five avoid late fertility administration Applying urea at the later stage of crop growth can easily cause late-maturing crops, affecting yield and normal harvesting. Six bogey single application Urea should be applied in combination with organic manure, phosphorus and potash to meet the needs of crops for various nutrients. It can also accelerate the conversion and decomposition of urea, and it can be quickly absorbed by crops to increase the utilization of urea.
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