The soil is acidic to improve

The harm of acid soil to crops is manifested in four aspects: one is to inhibit the growth and activity of beneficial microorganisms, thus affecting the decomposition of soil organic matter and the circulation of nitrogen, phosphorus, potassium and sulfur in the soil; the second is the breeding of pathogens, roots Increased disease, such as soil acidification will increase the growth and spread of crop root nematode disease; third is to cause the fixation of nutrients, such as when the soil pH is lower than 6, the phosphorus fixation rate in red soil decreases with the pH value The straight line rises, because the phosphorus is fixed, its effective utilization rate is greatly reduced; the fourth is to promote the release, activation and dissolution of some toxic elements, such as aluminum ions in the soil will have a toxic effect on the growth of wheat seedlings, not easy to fully seedling, often The formation of dead seedlings and old seedlings, low yield and poor quality, so that barley production has plummeted.

Acidic soils can be improved by:

Method 1: When the soil is prepared, the quicklime is evenly applied, and the dosage per acre is 40-50 kg. After that, the application amount is reduced by 1/2 every year until it is transformed into neutral or slightly acidic soil.

Method 2: Before the crop planting, the base fertilizer is mainly applied to the farmyard manure to increase the organic matter in the soil, improve the soil permeability and promote the rhizosphere microbial activity.

Method 3, increase the number of irrigation (sand irrigation can be implemented in paddy fields), and wash the fading acid to the crop.

Method 4: Plant acid-tolerant crops, such as mung beans, rice, rapeseed sweet potatoes, sugar cane, etc., and activate the soil through land preparation management.

Method 5, applying alkaline fertilizer, such as calcium magnesium phosphate fertilizer, phosphate rock powder, plant ash, ammonium hydrogencarbonate, lime nitrogen, ammonia water, and the like.

Method six, the implementation of water and drought rotation (two to three years for a change), the cultivation of the post-sow cover film, adjust the multiple cropping methods (such as rice - rice - rice, changed to rape - rice - rice).

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