Online detecting device for water-dissolved nitrogen nutrients of chemical fertilizer

Abstract

The invention provides an online detecting device for water-dissolved nitrogen nutrients of a chemical fertilizer. The online detecting device comprises a leaching system, a pre-treating system connected with the leaching system and an analyzing system connected with the pre-treating system. The online detecting device has the beneficial effects that: quick analysis comparison on concentration and mass of various water-dissolved nitrogen nutrients of the same chemical fertilizer sample or the same water-dissolved nitrogen nutrient of different chemical fertilizer samples can be realized, and the detected data is high in repeatability; a lead storage battery is adopted as a standby battery, and also can be normally used after power failure; stability of an electrolyte solution is high, so that occurrence of internal short circuit as PbO2 particles are freely dispersed into the electrolyte solution can be effectively prevented, and the cycle service life of the battery is prolonged; and moreover, a utilization rate for active substances of a positive electrode can be effectively increased, service time of the battery is prolonged, and acid mists do not generate, so that the online detecting device is green and environmental-friendly, and solves the problem of pollution to environment and equipment by the acid mists.

Description

technical field [0001] The invention relates to the technical field of preparation of on-line detection devices, in particular to an on-line detection device for nitrogen nutrient dissolved in chemical fertilizer water. Background technique [0002] It is an indisputable fact that the utilization rate of chemical fertilizers in our country is low, which not only increases the cost of agricultural production, but also wastes a lot of agricultural resources. More importantly, the large amount of nitrogen and phosphorus lost has become a serious threat to human health and the living environment. Studies have shown that about 30%-50% of the fertilizers applied to the soil in the world enter the groundwater through soil leaching. The Lake Institute of the Chinese Academy of Sciences conducted a study on agricultural non-point source pollution in the Taihu Lake Basin in western Zhejiang. The amounts of TP and TP are respectively: 4281.753 tons / year and 287.67 tons / year, more than ...

AI Technical Summary

Problems solved by technology

The above-mentioned device can quickly analyze and compare the concentration and quality of various water-dissolved nitrogen nutrients of the same fertilizer sample or the same water-dissolved nitrogen nutrient of different fertilizer samples, and the measured data has high repeatability; the amount of data obtained by each measurement item Large, which is conducive to drawing nutrient release trend curves; multiple groups of leaching experiments are carried out automatically at the same time, the experimental time is greatly shortened, and the problems of large operational errors and poor repeatability in manual determination are solved.

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