At present, most farmers in rural areas mix planting ash with farmyard manure, and some store ash in wet and drained places, leaving the wind and rain to the surface. These practices are all wrong and should be completely corrected.
Plant ash is a kind of farmhouse fertilizer that is rich in potassium. General plant ash contains 10% of calcium oxide, 5%-10% of potassium oxide, 0.6%-3% of phosphorus pentoxide, and a small amount of trace elements such as boron, zinc, sulfur, iron, magnesium, manganese and copper. Among them, more than 90% of the potassium salts are soluble and can be easily absorbed and utilized by crops. Therefore, most of the plant-wood ash is applied with readily available potassium fertilizers.
The main component of plant ash is potassium carbonate, which is alkaline reaction. Therefore, in order to accumulate and apply it scientifically, the following points must be noted:
1, plant ash to a single product accumulation, can not be poured into the barn, sheds and pigsty, nor can it be stored in damp and open places, but can not be mixed with human and animal waste and urine. According to the relevant information, 10% of the soil ash is mixed with the soil fertilizer. After a week of testing, the nitrogen loss is 28.3%-39.9%. The human waste is mixed with 10% of the plant ash, and the loss of nitrogen is 45%. This is because the alkaline substances contained in the plant ash promote the decomposition of nitrogen nutrients and result in the loss of fertilizer efficiency. In addition, more than 90% of the potassium contained in the plant ash is soluble, and moisture and rain will cause the loss of potassium and reduce the effect of fertilizer. Therefore, the stored grass ash should be stored separately and cannot be mixed with other farmyard fertilizers.
2, plant ash for a variety of neutral soil, especially for acidic soil, can adjust the acidity of the soil, and promote the release of phosphorus. But can not be applied to alkaline soil, so as not to increase the alkali content and alkalinity of the soil.
The plant ash is suitable for a variety of crops, and it is particularly effective for beneficiated crops such as beets, potatoes, fruit and vegetables. For potato, grapes and other chlorine crops, the effect of fertilizer due to chemical potash.
4. The plant ash can not be mixed with ammonium nitrogen fertilizers such as ammonium bicarbonate, ammonium sulfate, ammonium chloride, and ammonium nitrate, nor can it be mixed with farmyard fertilizers to avoid chemical reactions, resulting in loss of ammonium volatilization and reduction of fertilizer efficiency.
5, plant ash can not be mixed with superphosphate, heavy superphosphate mixed application. Otherwise, its water-soluble monocalcium phosphate will be converted into insoluble tricalcium phosphate, the crop is difficult to absorb, greatly reducing phosphate fertilizer efficiency.
6, plant ash can be used as base fertilizer, seed fertilizer and foliar spray fertilizer. Base fertilizer: spread 50-100 kg per acre ground, combined with arable land, into the soil; as seed fertilizer: potato seed dressing or acupuncture points, can increase the yield and quality, vegetable seedlings covered with ash, can increase heat absorption , To prevent rotting, dead seedlings; foliar spray fertilizer: In the crop growth period, available 10% of vegetation gray water, after soaking 24 hours after filtration, take the clear liquid, spraying 50-70 kg per acre.
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