[Effects of Combined Pollution of Cd and Microplastics on Winter Wheat Based on the PLS Model: Phytotoxicity and Soil Properties].

To explore the effects of heavy metals, microplastics, and their combined action on the growth, physiological ecology, and soil physicochemical properties of winter wheat （ L.）, we sought to identify the major controlling factors and thus to provide a theoretical basis for revealing the physiological ecology response mechanism and ecological restoration of contaminated soil. Soil culture treatment experiments were conducted to study the effects of the heavy metal cadmium （Cd） （0 mg·kg and 5 mg·kg） and polypropylene microplastics （PP-MPs） with different particle sizes （10 μm and 500 μm） and mass concentration （0, 0.

[Effects of Different Metal Elements on Cadmium Uptake Under Wheat-rice Rotation Condition].

The accumulation of cadmium （Cd） in the food chain poses a serious threat to human health. To explore the possible heavy metal cation inhibitor, a pot experiment was developed to research the addition of Fe, Mn, Zn, and Mg on Cd uptake and accumulation in wheat and rice. Soil Cd content was artificially added to 5 mg·kg and aged for one month.

[Response of Maize to Lead Stress and Relevant Chemical Forms of Lead].

A sand-culture experiment was carried out to research the differences in lead (Pb) chemical-form among different maize varieties for roots and shoots under Pb stress, and further investigate into the mechanism of maize endurance to resist Pb. The results showed that the wheat varieties of Zhengdan 958 and Longping 206 have the maximum Pb tolerance, whereas Lianchuang 5's tolerance of Pb was the minimum. Pb form in roots and shoots were mainly harmfulness HAc-extractable and HCl-extractable, accounting for a high proportion of 60% - 87%.