Improving Soil Properties by Silsesquioxane Humic Systemsтезисы доклада

Работа с тезисами доклада

[1] Improving soil properties by silsesquioxane humic systems / O. I. Filippova, A. R. Ziganshina, N. A. Safronova et al. // Book of Abstracts. Fourth International Conference of CIS IHSS on Humic Innovative Technologies From Molecular Analysis of Humic Substances – to Nature-like Technologies (HIT-2017). — ООО КЛУБ ПЕЧАТИ Москва, 2017. — P. 97–97. Soil humic substances directly and indirectly influence on wide range of properties that determine fertility. In particular they effect greatly on soil organic matter and soil structure. An introduction the humic acids (HA) modified with siloxanes (so called silsesquioxane humic systems, Si-HA) seems to be one of the most promising approach for improving soil properties, which are closely connected with soil fertility [1]. However, the development of this technology requires evaluation of interaction of silsesquioxane humic systems with wide range of soils. The goal of our work was to evaluate effect of silsesquioxane humic systems on soil organic matter properties as well as soil structure of soils belonging to different soilgeographical zones in Russia. To reach this goal, a model experiments with soil samples of humic horizons of Sodpodzolic, Grey forest, Chernozems and Chestnut soils in cultivated and no cultivated variants. Soils were saturated with HA or Si-HA 5 times, incubated at constant temperature and moisture during 21 d and dried. Then mean weight diameter (MWD) of water proof aggregates, microaggregates content (MAC) and ratio of CHA/CFA were estimated. Introduction to soil both HA and Si-HA increased MWD and MAC, and case of the Si- HA both MWD and MAC were significantly larger than in the soils treated with HA. CHA/CFA changed insignificantly in presence of Si-HA as compared to the control values whilst in case with HA CHA/CFA values considerably increased. So, the obtained results demonstrated clearly improving soil properties by silsesquioxane humic systems. References 1. Volikov A.B. et al. // Catena. 2016. 137:229–236. This research was supported by the Russian Science Foundation grant 16-14-00167.

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