Лужногідролізований азот в колоїдних формах гумусу чорноземів України

Abstract

Наведено результати досліджень впливу різного сільськогосподарського використання чорноземів звичайних та типових на уміст лужногідролізованого азоту в колоїдних формах гумусу. Установлено, що в чорноземах типових на відміну від чорноземів звичайних лужногідролізований азот розподіляється майже однаково по колоїдних формах гумусу, тоді як в останніх набагато більше вміст цього азоту в пасивній формі колоїдного гумусу.

Приведены результаты исследований влияния различного сельскохозяйственного использования черноземов обычных и типичных на содержимое щелочногидролизованого азота в коллоидных формах гумуса. Установлено, что в черноземах типичных в отличие от черноземов обычных щелочногидролизованый азот распределяется равномерно по коллоидных формах гумуса, тогда как в последних гораздо больше содержание данного азота в пассивной форме коллоидного гумуса.

Background. Nitrogen - one of the main nutrients necessary for plant life. It is part of proteins and nucleic acids, therefore plays an important role in the growth and development of all life on Earth. This nitrogen content in soil is closely linked with inventory and contents of humus. The quantity and quality of humus varies from human activity. It should definitely reflect on the changes and soil nitrogen Fund. Therefore, the study of quantitative and qualitative changes in soil nitrogen due to changes in the organic parts, identify ways of saving and accumulation in the soil it is important not only in the field of soil science and agriculture in Ukraine as a whole. Scientific novelty of the results - the first time the changes in nitrogen of colloidal forms humus black soil for different economic use; first set patterns change alkaline hydrolyzed nitrogen contents in colloidal form humus in the zonal aspect. These results of the effect of different agricultural use black soils ordinary and typical content on alkaline hydrolyzed nitrogen colloidal forms humus. Found that: 1. Agricultural activity in ordinary black leads to an increase alkaline hydrolyzed nitrogen content in passive form colloidal humus soil kitten option virgin and 20-40 cm soil layer belts. The lands of the remaining options research content is reduced. In the active form of colloidal humus content increase alkaline hydrolyzed nitrogen content in passive form ordinary black oxide increases 0-20 cm layer of soil tillage and fallows, and in all the studied soil strata belts. 2. Plowing and continued agricultural use of typical black soil leads to a decrease contents alkaline hydrolyzed nitrogen in passive form colloidal humus (thickness throughout the study) and increasing contents of the active form (0-20 cm layer) versus absolute virgin. Mowing virgin vegetation increases contents alkaline hydrolyzed nitrogen a passive form of colloidal humus typical chernozem and decrease in the active compared with a completely virgin typical black earth. Insertion shifting mode to black and typical l alkaline hydrolyzed nitrogen contributes to the accumulation of nitrogen in the passive form colloidal humus and reduced active form compared to soil tillage. 3. In typical black soils alkaline hydrolyzed nitrogen nitrogen distributed uniformly in the colloidal form of humus, whereas the ordinary black soils is much more content of nitrogen in the form of colloidal passive humus.