How to distinguish the level of soil fertility? How to tell if the soil is acidic or alkaline? And improved methods of acidic soils and alkaline soils. Today, Xiaobian will teach you a few tricks. The problem of soil acidity and alkalinity and fertility can be easily understood.
First, how to distinguish the level of soil fertility
The fertile soil is generally rich in humus and organic matter. The color is mostly dark earth (such as black, brown, brown), the soil layer is deep (30-60 cm and above), the soil is loose, not sticky, not knotted. Block, not hard, has good permeability and permeability, and also has more microbial groups and cockroaches in the ground, and there are many night tides. When the weather is dry, there are many small cracks on the surface of the soil. When watering, the water will quickly penetrate into the ground, and the water surface will become turbid. The soil in the northeast is generally fertile. In addition, fertile soil, generally weeds grow early, grow much longer, grow faster, and the dead time is relatively late.
The soil with low fertility generally has less humus and organic matter, and the color is mostly light-colored soil (such as light yellow, yellowish white, light white), the surface soil is shallow (30 cm or less), the soil is relatively hard, and the water permeability is breathable. Water retention and fertilizer retention is poor, and it is easy to crack and harden after rain or watering. The cracks are small, large and deep. When watering, the water penetration is slow and the water quality is clear, and the soil has no night tide. The plots with less underground microbes and more ants in the field are mostly soils with lower fertility.
Generally speaking, the soil-rich plots have good water-holding, heat-preserving and heat-insulating capacity, and the nutrients are also sufficient. It is more conducive to the root development and nutrient conversion of crops, and produces crops with better quality and higher yield. The land with low soil fertility is just the opposite.
In addition, in addition to soil fertility factors, most crops are most suitable for acid-base balance or micro-acid or micro-alkali or slightly acid micro-alkali soil environment, such soil environment is also conducive to microbial growth and activity. Therefore, after understanding the soil fat and thin condition, it is best to know whether the soil belongs to acidic soil or alkaline soil.
Second, how to distinguish between acidic soil and alkaline soil
Acidic soil, humus content is mostly dark brown, soil layer is thick, soil is loose, water permeability is strong, it is soft in the hand, the moist soil is not easy to hold into blocks, the surface watering does not take white bubbles, the water surface is turbid, can be very It quickly penetrates into the underground soil and is easier to dig.
Alkaline soil, the color is mostly light yellow and white, the soil layer is thin, the soil is hard, the water permeability is poor, and it is relatively hard and solid in the hand. The moist soil is easy to hold into a knot and it is not easy to spread after loosening. Watering on the surface often white foam, the water surface does not make cockroaches and penetrates into the underground soil slowly, and the earth is very digging or very difficult.
Third, acidic or alkaline adjustment
Acidic soil improvement, the acidity can be adjusted by adding a large amount of decomposed farm manure or organic fertilizer, applying lime, and washing the acid;
Alkaline soil improvement can be adjusted by adding a large amount of decomposed farm manure or organic fertilizer, adding green manure/pine needle soil, applying superphosphate/diammonium phosphate, and applying gypsum.
Jiangsu Asbao Medical Technology Co., Ltd. , https://www.iigloves.com