Crop sequence effects on energy efficiency and land demand in a long-term fertilisation trial

IF 1.8 3区农林科学 Q1 AGRONOMY

Plant, Soil and Environment Pub Date : 2021-12-10 DOI:10.17221/440/2021-pse

Gerhard Moitzi, R. Neugschwandtner, H. Kaul, H. Wagentristl

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引用次数: 0

Abstract

The effect of crop sequences (CR – continuous winter rye; CropR – three-field crop rotation of winter rye-spring barley-bare fallow) and fertilisation systems (unfertilised control, mineral fertiliser (NPK), farmyard manure (FYM)) on crop yield, energy efficiency indicators and land demand were analysed in a long-term experiment under Pannonian climate conditions. Due to lower fuel consumption in the bare fallow, the total fuel consumption for CropR was 27% lower than in CR. It was for NPK and FYM fertilisation by 29% and 42% higher than in the control. Although the energy output was lower in CropR than CR, the energy use efficiency for grain production increased by 35% and for above-ground biomass production by 20%. Overall crop sequences, the NPK treatment had higher crop yields, energy outputs and net-energy output with a lower energy use efficiency than the unfertilised control. CropR increased the land demand just by 20% in comparison to CR, although one-third of the land was not used for crop production. The land demand could be decreased with fertilisation by 50% (NPK) or 48% (FYM). A bare fallow year in the crop rotation decreased the crop yield, energy input and increased the energy use efficiency and land demand.

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长期施肥试验中作物序列对能源效率和土地需求的影响

在潘诺尼亚气候条件下的一项长期实验中，分析了作物序列（CR–连续冬黑麦；R–冬黑麦-春大麦裸休耕的三田轮作）和施肥系统（未施肥控制、矿物肥料（NPK）、农家肥（FYM））对作物产量、能效指标和土地需求的影响。由于裸休耕的燃料消耗较低，CropR的总燃料消耗比CR低27%。NPK和FYM施肥的燃料消耗分别比对照高29%和42%。尽管CropR的能源产量低于CR，但粮食生产的能源利用效率提高了35%，地上生物质生产的能源使用效率提高了20%。在整个作物序列中，NPK处理具有更高的作物产量、能量输出和净能量输出，但能量利用效率低于未施肥对照。与CR相比，CropR仅增加了20%的土地需求，尽管三分之一的土地没有用于作物生产。施肥可以减少50%（NPK）或48%（FYM）的土地需求。轮作中的裸休耕年降低了作物产量、能源投入，提高了能源利用效率和土地需求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plant, Soil and Environment Agronomy, Soil Science-农艺学

CiteScore

4.80

自引率

4.20%

发文量

审稿时长

2.4 months

期刊介绍： Experimental biology, agronomy, natural resources, and the environment; plant development, growth and productivity, breeding and seed production, growing of crops and their quality, soil care, conservation and productivity; agriculture and environment interactions from the perspective of sustainable development. Articles are published in English.