Grass ash is the ash produced after the firewood is burned, and it is often overlooked by vegetable farmers during production. More than 90% of potassium in plant ash is soluble, mainly potassium carbonate, which is alkaline. Plant ash is suitable for all kinds of crops, and all kinds of soil (except saline and alkaline land), with high nitrogen and phosphorus production on the ground, the effect is more significant, can do base fertilizer and top dressing. The amount of fertilizer is generally 50-100 kg per mu. Grass ash is easily blown away by wind, and can be moistened with water or mixed with 2 to 3 times of soil. If you apply acupuncture, use 50 kg per acre, add 150 kg of fine soil and mix evenly. From the root of the crop 10 to 15 cm, dig a hole to apply the plant ash, then bury it strictly, drill the crop, or open the channel. Shi. In the later period of general crop growth, we can use the plant and wood ash for extra-root dressing, spraying 10% to 20% concentration solution 75 kg per acre, and the effect is very good. In addition, seed soaking with plants and gray water can not only make the seeds germinate quickly, seedling growth is good, but also a certain degree of sterilization, prevent diseases. However, plant ash can easily react with ammonium sulfate, ammonium nitrate, and ammonia in human and animal wastes, resulting in the loss of nitrogen. Therefore, the plant ash cannot be mixed with the above fertilizers.
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