1. Soil and plants: Soil is the material basis and ecological environment for plant growth and development. The roots of plants absorb water, gas and nutrients in the soil, thus achieving growth and development. If the nutrients in the soil are lacking or the soil quality is not good, it will affect the normal growth of plants.
2. Plants and fertilizers: Fertilizer is the source of nutrients needed for plant growth and development. Organic fertilizer and inorganic fertilizer can provide soil with nutrients such as nitrogen, phosphorus and potassium and various trace elements needed by plants, meet the demand of plants for nutrients, improve the growth rate of plants and improve the quality of crops.
3. Soil and fertilizer: Soil is an important carrier for the survival and function of fertilizer, and the optimization of fertilizer use directly affects soil quality and ecological environment. At the same time, the rational application of fertilizer can also increase the content of organic matter in soil, maintain the benign ecology of soil, promote the improvement of soil productivity and protect soil resources.
To sum up, soil, plants and fertilizers are closely related, and they can meet the needs of plant growth and development, form a good agricultural ecosystem, protect natural resources and maintain ecological balance.
Introduction of Soil Agrochemical Analysis Course
Soil agrochemical analysis includes soil analysis, plant analysis and fertilizer analysis. We often hear "soil testing and fertilization" in our life. The "soil testing" mentioned here is a part of soil analysis. Before sowing, especially the newly reclaimed land, the contents of nitrogen, phosphorus and potassium in the soil should be determined to determine whether the land is suitable for planting crops and what level and method of fertilization should be adopted.
Plant analysis includes plant nutrient composition analysis and harvest quality analysis, which provides reference data for rational fertilization. Fertilizer analysis is an important content of commodity inspection, which is to determine the percentage content of a certain nutritional component and test whether the fertilizer meets the relevant national standards.