INFLUENCE OF PROTRACTED APPLICATION OF SYSTEMS OF BASIC TILL AND FERTILIZER IS ON STRUCTURE OF SOIL

Abstract

The results of researches of influence of the protracted application of the different systems of basic till of soil and fertilizer are presented on basic conformities to law and parameters of changes of the structural state that took place in an arable layer. It is educed that on a background a organic-mineral fertilizer for 20 years place improvement of structuralness of arable layer on 4,5-6,0 % by the greatest index for the moldboard systems. On a background a mineral fertilizer for this period the decline of amount of structuralness aggregates is marked from 0,1 % and chisel systems to 0,6 % and moldboard. In middle for 20 replacement of ploughing nonmoldboard tills on a background a organic-mineral fertilizer resulted in the decline of structuralness of arable layer on 2,0–8,0 %. On a background a mineral fertilizer a tendency was kept, though with some more subzero values, and to the organic-mineral background declines folded 0,1–3,7 %. Amount agronomical valuable aggregates in soil depended on the amount of debrises, evenness of their placing on an arable layer and from intensity of loosening. From time of sowing to the harvest the structuralness of soil got better with the greatest positive effect in sowing of mustard white, some more subzero, - to soy and most subzero - wheat winter-annual and at permanent advantage of background of organic-mineral fertilizer above mineral.

Keywords

• structuralness
• system
• basic till
• fertilizer
• soil