N2O Emissions from winter wheat crop. Kingsthorpe, Queensland, Australia 2009 [Theme: Filling the research gap. Round 2]

Soil N2O fluxes from winter wheat were monitored over one season with an automated measuring and analysis system allowing for a high temporal resolution. Emissions were measured from different irrigation intesities accordding to following experimental set up:
3 different irrigation treatments:

Fully-irrigated (I-50%). The crop will be irrigated when 50% of the plant available water capacity (PAWC) is depleted.

Deficit-irrigated 1 (I-60%). The crop will be irrigated when 60% of the PAWC is depleted.

Deficit-irrigated 3 (I-85%). The crop will be irrigated when 85% of the PAWC is depleted.

N2O emissions were measured with the closed chamber method with 3 replicates per treatmet for the period from June to October 2009

本研究依托高时间分辨率自动化测量分析系统，对一个生长季内冬小麦田的土壤氧化亚氮（N₂O）通量开展了连续监测。本试验针对不同灌溉强度设置如下实验组别，对氧化亚氮排放进行测定：
1. 充分灌溉组（I-50%）：当土壤植物有效含水量（Plant Available Water Capacity, PAWC）消耗达50%时，对作物进行灌溉。
2. 亏缺灌溉1组（I-60%）：当PAWC消耗达60%时，对作物进行灌溉。
3. 亏缺灌溉3组（I-85%）：当PAWC消耗达85%时，对作物进行灌溉。
本试验于2009年6月至10月期间，采用静态箱法（closed chamber method）对各组氧化亚氮排放进行测定，每组设置3次重复。