Three characteristics of soil nutrients in greenhouse cultivation The basic equipment required for modern horticultural production in greenhouses can be used to adjust parameters such as temperature, light, humidity, and carbon dioxide concentration in the plant growth environment. Nowadays, in order to increase the production of crops in greenhouses, a large amount of fertilization is conducted. By using soil testers to understand the nutrient changes in soil, the characteristics of soil nutrients in greenhouses are obtained. The following three points are mainly used.
Soil total nitrogen and available nitrogen content and distribution. Nitrogen has an extremely important influence on plant life activities and crop yield and quality. Rational application of nitrogen fertilizer is an effective measure for obtaining high yields of vegetables. The soil total nitrogen content reflects the soil nitrogen supply status, and the alkaline dissolved nitrogen content can reflect the soil's nitrogen supply capacity to the current season crop. Greenhouse vegetable cultivation significantly increased the accumulation of nitrogen in the soil. Excessive accumulation of nitrogen in the soil can lead to potential environmental problems such as leaching of nitrate nitrogen and release of nitrous oxide.
Accumulation of available phosphorus and available potassium. There was a significant accumulation of available phosphorus in greenhouse vegetables. However, the available potassium content is relatively small compared with the open land, and nearly 1/4 of the greenhouse soil has lower available potassium content than the adjacent open areas. The available phosphorus content in the investigated greenhouses was at a high level, indicating that the phenomenon of excessive application of phosphate fertilizers in the investigated greenhouses was remotely studied in recent years. Excessive accumulation of soil phosphorus also poses a potential threat to the environment.
Soil pH and organic matter status. Compared with open soil, soil pH values ​​in sunlight greenhouses have different degrees of reduced soil acidification trends under greenhouse cultivation conditions. Although most vegetables are suitable for growth in slightly acidic and neutral soils, long-term large-scale application of nitrogen fertilizer in sunlight greenhouse conditions can cause excessive acidification of the soil, destroy the physiological function of plant roots, and reduce the effectiveness of P, Ca, Mg and other elements in soil. , induce the lack of disease, affect the yield and quality of vegetables.
Because farmers' irregular fertilization in greenhouses leads to deterioration of soil nutrients, and to a certain extent, it also reduces the quality of crops. When fertilizing, it is best to use a soil NPK detector The lack of soil nutrients was analyzed and fertilization was performed. At the same time, soil fertility analyzers could be used to understand trends in soil nutrient changes and witness changes in nutrients.
Soil total nitrogen and available nitrogen content and distribution. Nitrogen has an extremely important influence on plant life activities and crop yield and quality. Rational application of nitrogen fertilizer is an effective measure for obtaining high yields of vegetables. The soil total nitrogen content reflects the soil nitrogen supply status, and the alkaline dissolved nitrogen content can reflect the soil's nitrogen supply capacity to the current season crop. Greenhouse vegetable cultivation significantly increased the accumulation of nitrogen in the soil. Excessive accumulation of nitrogen in the soil can lead to potential environmental problems such as leaching of nitrate nitrogen and release of nitrous oxide.
Accumulation of available phosphorus and available potassium. There was a significant accumulation of available phosphorus in greenhouse vegetables. However, the available potassium content is relatively small compared with the open land, and nearly 1/4 of the greenhouse soil has lower available potassium content than the adjacent open areas. The available phosphorus content in the investigated greenhouses was at a high level, indicating that the phenomenon of excessive application of phosphate fertilizers in the investigated greenhouses was remotely studied in recent years. Excessive accumulation of soil phosphorus also poses a potential threat to the environment.
Soil pH and organic matter status. Compared with open soil, soil pH values ​​in sunlight greenhouses have different degrees of reduced soil acidification trends under greenhouse cultivation conditions. Although most vegetables are suitable for growth in slightly acidic and neutral soils, long-term large-scale application of nitrogen fertilizer in sunlight greenhouse conditions can cause excessive acidification of the soil, destroy the physiological function of plant roots, and reduce the effectiveness of P, Ca, Mg and other elements in soil. , induce the lack of disease, affect the yield and quality of vegetables.
Because farmers' irregular fertilization in greenhouses leads to deterioration of soil nutrients, and to a certain extent, it also reduces the quality of crops. When fertilizing, it is best to use a soil NPK detector The lack of soil nutrients was analyzed and fertilization was performed. At the same time, soil fertility analyzers could be used to understand trends in soil nutrient changes and witness changes in nutrients.