Nitrogen leaching and residual effect of barley/field bean intercropping
Nitrogen leaching and residual effect of barley/field bean intercropping
复制标题
DOI：
10.17221/832/2014-pse
复制
发表时间：
2016-06
影响因子：
2.4
通讯作者：
M. Mariotti;A. Masoni;L. Ercoli;I. Arduini
中科院分区：
文献类型：
--
作者：
M. Mariotti;A. Masoni;L. Ercoli;I. Arduini
谷物/豆类间作可提高农业生态系统的资源利用效率，增加单位面积产量和产量稳定性。两种蚕豆（Vicia faba L.）和4个大麦（Hordeum vulgare L.）在桑迪壤土上进行了为期2年的蒸渗试验，研究了品种的单作和间作（加性设计）。研究了不同种植制度对牧草干物质和氮素产量的影响，以及对后茬多花黑麦草（Lolium multiflorum Lam.）westwoldicum），以及轮作过程中NO3-N的淋失。土地当量比为1.65的干物质和1.67的N产量，表明一个明显的优势，单作间作。这两个物种遭受竞争，特别是在氮资源方面，但大麦的影响较小。间作处理硝态氮淋失量最低。前茬对黑麦草干物质、氮含量和NO3-N淋失有显著影响.就饲料干物质和氮含量而言，菜豆单作对黑麦草的效益最高，但NO3-N淋失也最高，其次是间作和大麦单作。大麦/蚕豆间作可能是一种有效的策略，以减少土地需求，N淋溶损失和肥料投入，从而提高农业系统的可持续性。
Cereal/legume intercropping may improve resource use efficiency in agroecosystems and increase yield per unit surface area and yield stability. Two field bean ( Vicia faba L.) and four barley ( Hordeum vulgare L.) cultivars were mono- and intercropped (additive design) in a 2-year lysimeter experiment on a sandy loam soil. The aim was to test the effect of the cropping system on dry matter and N yield of forage, the residual effect on the subsequent ryegrass crop ( Lolium multiflorum Lam. westerwoldicum ), and NO 3 -N leaching in the rotation. Land equivalent ratios were 1.65 for dry matter and 1.67 for N yield, indicating a clear advantage of the intercrop over sole crops. Both species suffered from competition, especially in terms of N resources, but barley was less affected. Nitrate leaching was the lowest from intercrop. Preceding crop significantly affected dry matter, N content and NO 3 -N leaching of ryegrass. Field bean sole crop gave the highest benefits to ryegrass in terms of forage dry matter and N content, but also the highest NO 3 -N leaching, followed by the intercrop and the barley sole crop. Barley/field bean intercropping may be an effective strategy to reduce land requirements, N leaching losses and fertilizer inputs, thereby increasing the sustainability of farming systems.