What are the functions of plant ash?

Plant ash is the ash formed after the burning of firewood and grass. it belongs to loose quick-acting potash fertilizer, which generally contains 5% to 15% available potassium, as well as calcium, magnesium, sulfur, phosphorus and iron. It is an important fertilizer source in traditional agricultural production. Let's take a look at the effects of plant ash.

Promote seed germination

After sowing the forest seeds, planting 0.5-1 cm with plant ash can increase the soil temperature, maintain the loose and aerated state, promote the seeds to germinate ahead of time, and the seedlings are neat, robust and the seedling rate is high.

Promote crop rooting

In seedling transplanting, using plant ash combined with organic fertilizer as base fertilizer, or adding 5% Mel 20% plant ash when preparing nutritious soil can not only increase the effective nutrients of base fertilizer and nutritious soil, promote root growth, but also reduce diseases and insect pests.

Prevent crop defoliation

Spraying 10% plant ash leaching solution (fresh plant ash 10 kg to 100 kg clear water fully stirred, static 14murm 16 hours after filtration, slag clarification can be sprayed) as supplementary nourishment, can improve leaf vitality, prevent early leaf fall, enhance photosynthesis, and promote beautiful flowers and fruits.

Improve the quality of agricultural products

Plant ash not only contains a large number of nutrient elements such as potassium and calcium, but also contains iron, magnesium and other trace elements, and has quick effect, so it is a kind of high quality foliar fertilizer. Spraying 50% Mel 80% plant ash extract on the leaves before and after flowering can promote green branches and leaves, enhance photosynthesis, reduce flower and fruit shedding, promote flower and fruit coloring, prolong viewing period, and improve fruit quality.

Control of diseases and insect pests

Spraying plant ash 30ml / mu in the nursery can kill underground diseases, insects and germs, protect seeds, roots and stems, reduce diseases and insect pests, and prevent the occurrence of blight and anthracnose. The application of plant ash in orchard can control the occurrence of powdery mildew and fruit rust. 2.5-5 kg of plant ash per plant can also control root rot. Spraying 2% Mel 3% plant ash extract can control aphids, red spiders and other pests on flowers and fruits, and improve the drug control effect of pear planthopper.

Improve the drought resistance of fruit trees

For dryland fruit trees with poor irrigation conditions, spraying 5% Mel 6% plant ash extract 2-3 times in a row can improve the drought resistance of fruit trees. Because plant ash contains a lot of potassium ions, it can effectively reduce the intensity of transpiration of fruit trees, enhance the ability of drought and high temperature resistance, promote the movement of carbohydrates, and improve the ability of disease resistance and insect resistance of fruit trees.

As an agricultural fertilizer

Plant ash can not be mixed with organic farm manure (human manure, stable manure, pile retting fertilizer, etc.) and ammonium nitrogen fertilizer, so as to avoid the loss of nitrogen volatilization; nor can it be mixed with phosphate fertilizer, so as not to cause phosphorus fixation and reduce the fertilizer efficiency of phosphate fertilizer.

1. Soil application: because plant ash is alkaline, clayey soil, acidic or neutral soil is suitable for soil application. Soil application can be used as base fertilizer, seed fertilizer and topdressing, as well as mulch (covering seed fertilizer) for raising seedlings and seedlings. When making base fertilizer and seed fertilizer, the amount of fertilizer should not be too large and should be isolated from the seeds to prevent seed burning. The suitable dosage is 50kg / mu and 100kg / mu. Centralized application is suitable for soil application, both strip application and hole application can be used, with a depth of 8 mi 10 cm, and cover the soil after application. Mix 2 times as much wet soil before application or spray with a little water before use.

2. Extra-root topdressing: more than 90% of the potassium contained in plant ash is soluble in water, which is a quick-acting potassium fertilizer. According to this characteristic, plant ash can be used as extra-root topdressing, that is, foliar spraying with 1% plant ash extract.

3. Priority crops: plant ash is suitable for all kinds of crops, especially for potassium-loving or potassium-bogey crops, such as potato, sweet potato, tobacco, grape, sunflower, sugar beet and so on. Plant ash is used in potatoes, not only for soil application, but also for coating potato wounds, so that it can not only be used as fertilizer, but also prevent wound infection and decay.

4. fertilizer function: potassium can promote nitrogen metabolism and sugar synthesis and transport in plants, promote plant growth and enhance its ability to resist diseases, pests and natural disasters. in addition, it can also improve plant drought resistance. To ensure the smooth progress of various metabolic processes. When lacking, the stem is thin and weak, and it is easy to lodge.

Used as a disinfectant

Plant ash is a widely existing disinfectant raw material in rural areas, which has a strong role in killing pathogens and viruses, and its effect is similar to that of caustic soda, a powerful disinfectant.

With 2 to 3 kg of plant ash, 10 kg of hot water can be used for livestock barn, feeding trough, appliances and other disinfection. In order to enhance the effect of disinfection, 30 kg of plant ash and 100 kg of water can be used for the disinfection of livestock houses and appliances contaminated by classical swine fever, foot-and-mouth disease, chicken Newcastle disease and so on. The disinfectant has the characteristics of strong disinfection effect, no side effect, no irritation and so on.

It should be noted that plant ash is alkaline and can not be mixed with acid fertilizers and pesticides. Plant ash leachate should be sprayed on the leaf surface and should be used after filtration and clarification to prevent pollution to leaves, flowers and fruits.