Data from: Temporal and spatial positioning of service crops in cereals affects yield and weed control

Data sets used for analyses made in the article <em>Temporal and spatial positioning of service crops in cereals affects yield and weed control</em> collected under three field seasons in four experiments studying a relay intercropping system of cereals and forage legumes. For more details on the experiment see the article. The treatment and experimental names were changed for the article:<br> Experimental sites:<br> SK1 = 3583<br> OG1 = 3584<br> SK2 = 3585<br> OG2 = 3586 Treatments:<br> Early Intra = A<br> Late Inter = B<br> Late adjacent = C<br> Control (no service crop) = 1<br> Frost sensitive annuals = 2<br> Perennials = 4<br> Frost tolerant annuals = 3 For the proportion of fixed nitrogen (files starting with N15leg) two different questions (Q1 and Q2) were asked to the data set, according to the data included. .1 and .2 indicate that the data sets are from all experiments or only experiments where frost tolerant annuals were included.<br> Q1 = Does the proportion of fixed nitrogen in SC above ground biomass vary between service crop species?<br> Q2 = Does the proportion of fixed nitrogen in SC above ground biomass vary between SC sowing time? WA is an abbreviation which was earlier used for frost tolerant annuals, so the same as the abbreviation T in the article. Hence, files with the word "all" in the name were used for the analyses called "S &amp; P" in the article. While those with the abbreviation WA or ABC in the name were used for the analyses called "S, P &amp; T" in the article.本数据集用于支撑发表于论文《谷类作物中服务作物的时空配置对产量与杂草防控的影响》（原文标题：*Temporal and spatial positioning of service crops in cereals affects yield and weed control*）的相关分析，该数据集采集自3个田间季的4组试验，旨在研究谷类作物与饲用豆科的套作（relay intercropping）系统。如需了解试验详情，请参阅该论文。 论文中对试验与处理名称进行了更名： 试验地点： SK1 = 3583 OG1 = 3584 SK2 = 3585 OG2 = 3586 处理组： 早播套作（Early Intra）= A 晚播套作（Late Inter）= B 晚播邻作（Late adjacent）= C 对照组（无服务作物）= 1 霜冻敏感型一年生作物（Frost sensitive annuals）= 2 多年生作物（Perennials）= 4 霜冻耐受型一年生作物（Frost tolerant annuals）= 3 针对固氮比例（对应文件名以N15leg开头的数据集），根据所纳入的数据，本数据集需回答两个研究问题（Q1与Q2）。其中后缀.1与.2分别表示数据集源自全部试验，或仅包含霜冻耐受型一年生作物处理的试验： Q1：服务作物（service crop，后文简称SC）地上生物量中的固氮比例是否因服务作物种类而异？ Q2：服务作物地上生物量中的固氮比例是否因服务作物播期而异？ WA是此前用于指代霜冻耐受型一年生作物的缩写，与论文中的缩写T含义一致。因此，文件名包含"all"的数据集被用于论文中名为"S & P"的分析；而文件名包含缩写WA或ABC的数据集，则被用于论文中名为"S, P & T"的分析。