Diagnosis method for level of potassium nutrients in tomato on basis of change of microstructure of leaf

Abstract

The invention discloses a diagnosis method for the level of potassium nutrients in a tomato on the basis of the change of a microstructure of a leaf, and is used for diagnosing the level of the potassium nutrients in the tomato on the basis of the microstructure of the leaf. The diagnosis method comprises the following steps: firstly, acquiring a microscopic structure image and an ultramicroscopic structure image of the tomato leaf by means of a scanning electron microscope system and a transmission electron microscope system; and then extracting the sizes and the density of stoma on the surface of the leaf, the height and the density of tomenta on the surface of the leaf, the density of vascular bundles on the surface of the leaf, the thickness of sponge tissues and the thickness of palisade tissues on the section of the leaf and the thickness of the whole leaf as well as the characteristics of an ultramicroscopic structure of mesophyll cells under the conditions of different potassium nutrients, and carrying out representation and statistic analysis. The diagnosis method disclosed by the invention can be used for diagnosing information of the potassium nutrients in the tomato as early as possible and can be applied to detection of the level of potassium nutrients in greenhouse tomatoes.

Description

technical field

[0001] The invention relates to a method for diagnosing the potassium nutrient level of crops, in particular to a method for diagnosing the potassium nutrient level of tomato based on leaf microstructure changes. Background technique

[0002] In recent years, my country's facility agriculture has developed rapidly, but in facility cultivation, there are often imbalances in the ratio of nitrogen, phosphorus and potassium nutrients and symptoms of deficiency. At the same time, there is a phenomenon of excessive fertilization in some places, which directly affects the physiological process and overall ecological environment. Therefore, precise management of nutrients during crop growth is urgently needed. Early and high-precision detection of crop nutrients is a necessary prerequisite for precise nutrient management. At present, the early detection technology of protected crop nutrients in my country can accurately measure the nitrogen nutrition level, and the ...

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