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Exogenous glycinebetaine treatment is an effective measure for preventing crops from being exposed to drought and high temperature; however, the effects of this approach on the soil Cd uptake and accumulation by crops remain unclear. Pot experiments were conducted in this study to analyze the effect of glycinebetaine on the soil Cd uptake and accumulation by edible amaranth cultivated in Cd-contaminated soil. Results revealed that after exogenous glycinebetaine treatment on amaranth leaves during the vigorous growth period, the plant biomass, the Cd concentrations in the roots and shoots, and the Cd translocation factor (TF) were significantly higher than those of the control group. The highest Cd concentrations in the roots and shoots and the TF were higher by 91%, 96% and 23.8%, respectively, than the corresponding values in the control group. In addition, exogenous glycinebetaine treatment significantly increased leaf chlorophyll content and promoted the photosynthesis of edible amaranth. Consequently, the contents of soluble sugar, dissolved organic carbon, and low-molecular-weight organic acids significantly increased in the rhizosphere, resulting in Cd mobilization. Significant positive correlations were observed among the contents of leaf chlorophyll, Mg, Fe, pectin and Ca. Given that Cd shares absorption and translocation channels with these elements, we speculated that the increased leaf chlorophyll and pectin contents promoted the absorption and accumulation of Mg, Fe and Ca, which further promoted the absorption and translocation of Cd. These results indicated that exogenous glycinebetaine treatment during hot season would aggravate the health risks of crops grown in Cd-contaminated soils.

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Power is the basis of the development of enterprises and even the country. In recent years, the demand for power in China is increasing. Wireless access terminals and intelligent meter reading have been widely used in the field of electric power. But at the same time, there are still many deficiencies in China’s power grid. Therefore, this paper puts forward the research of ubiquitous power Internet of things and IPv6 Technology in wireless access terminal and intelligent meter reading application. In this paper, the current types of distribution network are investigated, and the shortcomings of the current power grid are analyzed. In view of the existing power grid operation in China, this paper deeply studies the prospect of ubiquitous power Internet of things and IPv6 Technology in wireless access terminal and intelligent meter reading application, as well as the unique advantages of ubiquitous power Internet of things and IPv6 Technology in power grid. Through the relevant investigation, it can be seen that the service level, operation level, ecological environment construction and data sharing of the enterprise have been greatly improved after using ubiquitous power Internet of things and IPv6 technology. In addition, the power network structure has the advantages of simplifying network, reducing parameter setting, reducing communication flow and enhancing real-time data transmission. At the end of the study, this paper analyzes the key technology of ubiquitous power Internet of things in wireless access terminal and intelligent meter reading application, and puts forward a new research direction for the full application of the technology.