Remediator for acidic soil and heavy metal polluted soil and preparation method of remediator

Abstract

The invention discloses a 1,3,4-thiadiazole (oxadiazole)-phenazine-1-formamide compound. The structure of the compound is as shown in a formula (I), wherein R is at least one of hydrogen, halogen, nitryl, hydroxyl and alkyl or alkoxy of which the carbon atom sum is 1-4; and X is O or S. The 1,3,4-thiadiazole (oxadiazole)-phenazine-1-formamide compound disclosed by the invention is remarkably higher than shenqinmycin on the aspect of inhibiting the activity of fusarium graminearum, and the EC50 of a compound I-8 with the optimal activity is reduced by 95.29mu g . mL<-1> than that of PCA; and the compounds I-8 and I-22 are equivalent to shenqinmycin on the aspect of inhibiting the activities of rhizoctonia solani, Pyricularia grisea and phytophthora capsici. In addition, the preparation method provided by the invention is simple and rapid, high in yield and convenient for large-batch preparation in an actual production process.

Description

technical field [0001] The invention relates to a remediation agent for acidic soil and heavy metal polluted soil and its preparation, belonging to the technical field of agricultural land promotion and protection application products. Background technique [0002] Acidic soil is the general term for soil with a pH value less than 7. Including brick red soil, red soil, red soil, yellow soil and dry red clay And so on. my country's tropical, subtropical area , widely distributed acidic soils of various red or yellow soils. The local temperature is high and the rainfall is heavy, with the annual rainfall mostly above 1500mm. The characteristics of high temperature, rainy season, and hot and humid seasons make the weathering and pedogenesis of the soil very strong, and the cycle of biological matter is very rapid. The base is highly unsaturated and the pH is generally 4.5-6. At the same time, iron and aluminum oxides are obviously accumulated, and the soil is sour and le...

AI Technical Summary

Problems solved by technology

[0009] For the soil pollution caused by heavy metals, there is no effective treatment method, and most plants and pastures that can absorb heavy metals are planted. There is a huge project in planting crops in this way, the restoration period is long, and the flowers and plants planted cannot be used.

In particular, the polluted land caused by mining development and metal smelting is basically abandoned and unusable

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