Clay generally contains many organic and inorganic colloids, large cation exchange capacity, strong soil fertility, and nutrient loss. However, clay is slow for fertilizer and has a slow effect after fertilization. This kind of soil “will not grow young seedlingsâ€. The effect of fertilizer is slow and long, the soil is tight, and the permeability is poor. When this type of soil is applied to farmyard fertilizers, farmhouse fertilizers rich in organic matter that are well decomposed should be used. Because the soil is cloudy, farmyard manure can be used for horse manure and other hot fertilizers. Because of the strong soil fertility, when fertilizers are applied, they will not cause excessive burning of seedlings or loss of nutrients. However, if the amount of nitrogen fertilizer is too much, the late-stage fertilizer effect will be fully exerted, which will easily cause the crop to become greedy and late, resulting in a reduction in yield. .
Viscous soil has heavy soil quality and slow diffusion of nutrients, especially phosphate fertilizer. It is not easy to reach the root absorption area. Fertilizer should pay attention to the depth. The topdressing of chemical fertilizer should be combined with farming to make the fertilizer as close to the root system as possible, so as to increase the fertilizer utilization rate. The proper mixing of clay in the plough layer is beneficial to improving the fertilizer supply capacity.
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