Biogas fertilizer is a good fertilizer with slower speed and better performance. However, there are the following five precautions when using biogas fertilizer: 1. Avoid regenerating biogas fertilizer immediately after it is discharged from the pond. Apply it immediately after leaving the pond and compete with the crop for oxygen in the soil. Affects seed germination and root development, resulting in yellowing and withering of the crop leaves. Therefore, after the biogas fertilizer is out of the pool, it is generally stored in the storage tank for 5-7 days. The biogas residue and the phosphate fertilizer are mixed in a ratio of 10:1 and then mixed for 5-7 days. The effect is better. Second, avoid bogey direct application of biogas fertilizer not directly applied to the water on the crops, especially for topdressing seedlings, will use right crops burn phenomenon. When biogas fertilizer is topdressing, it must be water first, and generally the amount of water is half of the biogas slurry. Three bogey topsoil application of biogas fertilizer applied to dry land crops should use acupuncture, furrow, and then covered with soil. Applied to paddy field should spread the field surface evenly before the blank, then plowing into the bottom layer. Four avoid excessive application of biogas fertilizer can not be too much, generally less than the use of ordinary pig manure. If it is applied in large quantities blindly, it will lead to long crops and shadows between the rows, resulting in reduced yields. The five bogey and grass ash, lime and other alkaline fertilizers mixed with plant ash, lime and other alkaline until strong, mixed with biogas fertilizer, will cause loss of nitrogen fertilizer, reduce fertilizer efficiency.
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