Application of Chlorophyll Meter in the Study of Potato Nitrogen Fertilizer Management

At present, with the continuous increase of grain output, the country has accelerated the process of grain-feeding, and potato is one of the most important food-feeding varieties in the current agricultural field. In order to increase the yield and quality of potatoes, in the production process, strengthen it. Planting management is critical. Adequate nitrogen supply is the premise of high yield of potato. Insufficient application of nitrogen fertilizer will reduce production. In order to strengthen the management of potato nitrogen fertilizer, it is urgent to use chlorophyll meter to strengthen research on potato nitrogen fertilizer management technology, and also need to apply in actual production process. Chlorophyll meter to strengthen scientific and technological guidance, in order to achieve accurate management of potato nitrogen fertilizer, improve nitrogen fertilizer utilization, and reduce nitrogen fertilizer pollution.

Chlorophyll meter is mainly used for rapid and non-destructive detection of chlorophyll content in plant leaves. Since nitrogen is a component of plant chlorophyll, nitrogen yield and loss directly affect the chlorophyll metabolism of plant leaves. When nitrogen deficiency occurs, the chlorophyll concentration of crop leaves decreases, and the color of leaves changes yellow. The use of chlorophyll meter to determine chlorophyll in potato leaves and indirectly determine the nitrogen deficiency of potato crops is a scientific and accurate way. Moreover, the chlorophyll meter has the characteristics of simple, rapid, non-destructive and easy to carry, and is therefore very suitable for direct participation in agricultural research and production management in the field.

In the research of crop nitrogen nutrition diagnosis and recommended fertilization, through the application and promotion of chlorophyll meter, some breakthrough research results have been obtained on rice, corn, wheat and other crops, and with the expansion of research crop varieties. Chlorophyll meter plays an important role in more and more crop research. This time, through the application of chlorophyll meter in potato nitrogen management research, the results show that there is a significant positive correlation between SPAD value and tuber yield in potato leaves. Used to predict production. This also shows that the use of chlorophyll meter for potato nitrogen nutrition diagnosis and recommended fertilization is more feasible.

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