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Influence of mineral fertilization on the production of a mixture of alfalfa and orchard grass in the year III of vegetation

机译:植被第三年矿物施肥对苜蓿和果园草混合生产的影响

摘要

This study was conducted during three production cycles of the third year of vegetation. The main objective was to determine the production of dry matter (DM) and crude protein (CP) made under the influence of mixture and fertilization with nitrogen on P50 agrofond to alfalfa and orchard grass. To achieve these objectives, three variants of mixture were tested between alfalfa and cocksfoot that were applied to four rates of mineral fertilizers. The mixture 75% alfalfa (Medicago sativa L.) and 25% orchard grass (Dactylis glomerata L.) under the effect of dosing with N100P50achieved the highest production increase of DM on cycle I, 108% (5.24 Mg haDM) compared to the control, unfertilized alfalfa in pure culture (4.85 Mg ha DM). The highest increase forthe CP yield was obtained on cycle I from the 100% alfalfa fertilized with doses of N-1-1100P50, 122% (1230 kg haCP) from 100% alfalfa unfertilized (1009 kg ha CP). Alfalfa fertilized with N-1-1100P50 rate had the highest increases on total DM yield (106%, 10.64 Mg haDM) and on total quantity of CP(124%, 2304 kg ha CP).
机译:这项研究是在植被第三年的三个生产周期中进行的。主要目的是确定在氮肥的混合和施肥作用下,苜蓿,苜蓿和果园草中P50的干物质(DM)和粗蛋白(CP)的产量。为了实现这些目标,在苜蓿和鸡爪之间测试了三种混合形式,分别应用于四种肥料。与对照相比,在施用N100P50的影响下,混合物75%苜蓿(Medicago sativa L.)和果园草(Dactylis glomerata L.)达到了DM最高的I循环增产,增幅为108%(5.24 Mg haDM)。 ,纯培养物中未受精的苜蓿(4.85 Mg ha DM)。 CP产量的最高增幅是在第I周期中从用N-1-1100P50剂量施肥的100%苜蓿中,从未施肥的100%苜蓿(1009 kg公顷)中获得122%(1230 kg haCP)。以N-1-1100P50比例施肥的苜蓿,DM总产量的增幅最高(106%,10.64 Mg haDM),CP总量的增幅最高(124%,CP 2304 kg)。

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