Grass ash is an inorganic farm fertilizer.

Grass ash is the residue from burning plants. It is an insoluble substance. Grass wood ash fertilizer because of grass wood ash for plant burning ashes, so is where the plant contains mineral elements, grass wood ash in almost all contain. Grass ash is light and alkaline, dry easy to go with the wind, wet easy to go with the water, and nitrogen fertilizer is easy to contact with the nitrogen element volatilization loss.

The main component of grass ash is potassium carbonate, relative molecular mass of 138. grass ash fertilizer because of grass ash for the plant burning ash, so is where the plant contains mineral elements, grass ash almost all contain. The most abundant of them is potassium, generally containing potassium 6 to 12%, of which more than 90% is water-soluble, in the form of carbonate. Next is phosphorus, containing calcium, magnesium, silicon, sulfur and iron, manganese, copper, zinc, boron, molybdenum and other micronutrients.

Use:

Inhibition of pests and diseases: 30~50 kilograms of grass ash sprinkled per mu of nursery can kill underground pests and germs, protect the seeds, roots and stems, reduce pests and diseases, and prevent the occurrence of standing wilt and anthracnose. Orchard application of grass ash, can control the occurrence of powdery mildew, fruit rust, per plant application of grass ash 2.5-5 kg and the role of root rot prevention. Spraying 2%-3% grass ash leachate can control aphids, red spiders and other pests on flowers and fruits, and improve the effect of pear louse drug prevention.

Improve the drought resistance of fruit trees: the irrigation conditions of poor dryland fruit trees, continuous spray 2-3 times grass ash leachate, can improve the drought resistance of fruit trees. Because grass ash contains a large number of potassium ions, can effectively attenuate the intensity of fruit tree leaf transpiration water, enhance the tree's drought resistance, resistance to high temperature, but also promote the operation of carbohydrates, improve the tree's resistance to disease and insect resistance.