张德,龙会英,曾丽萍,刘屹湘.间作和施磷对2种牧草生物量及氮磷吸收的影响[J].干旱地区农业研究,2019,37(5):77~82
间作和施磷对2种牧草生物量及氮磷吸收的影响
Effects of intercropping and phosphorus application on biomass, nitrogen and phosphorus absorption of two forage species
  
DOI:10.7606/j.issn.1000-7601.2019.05.12
中文关键词:  柱花草  扭黄茅  间作  施磷  生物量  氮磷吸收
英文关键词:S. guianensis  H. contortus  intercropping  P application  biomass  nitrogen and phosphorus absorption
基金项目:国家自然科学基金地区基金项目(41361099);云南省科学技术厅云南省技术创新人才培养项目(2011CI066);云南省农业科学院热区生态农业研究所科技计划项目(RQS 2006-1,RQS 2008-1)
作者单位
张德 Institute of Tropical Eco-agricultural Sciences, Yunnan Academy of Agriculture Sciences, Yuanmou, Yunnan 651399, China Yuanmou Dry-Hot Valley Botanical Garden, Yuanmou, Yunnan 651399, China 
龙会英 Institute of Tropical Eco-agricultural Sciences, Yunnan Academy of Agriculture Sciences, Yuanmou, Yunnan 651399, China Yuanmou Dry-Hot Valley Botanical Garden, Yuanmou, Yunnan 651399, China 
曾丽萍 College of science, Honghe UniversityMengzi, Yunnan 661199China 
刘屹湘 College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan 65020124, China 
摘要点击次数: 165
全文下载次数: 147
中文摘要:
      采用双因素随机区组田间试验设计,设置不同种植模式(单作和间作)和2个磷水平(不施P:P0;P:P75),研究柱花草与扭黄茅间作和施磷对牧草生物量、养分吸收的影响。结果表明:在株行距均为50 cm条件下,施磷提高了间作体系中扭黄茅生物量的30.10%和氮吸收量的21.51%,但减少了柱花草地上部生物量5.53%和氮、磷吸收量的3.73%和3.18%。2015年,相对扭黄茅地上部生物量,P75水平下,与柱花草间作显著高于扭黄茅单作31.00%(P<0.05)。与未施磷对比,施磷条件下,柱花草和扭黄茅间作地上部的生物量分别增加41.31%和52.68%。2个磷水平下的土地当量比(LER)、间作系统生产力(SP)及牧草种间竞争能力(A)无明显差异(P>0.05)。在间作系统中,相对柱花草,其与扭黄茅种间竞争能力小于0,说明柱花草在间作系统中为弱竞争作物。氮磷吸收方面,2015年,P0和P75水平下,间作体系中的柱花草氮、磷吸收量显著低于柱花草单作67.74%(P0)和67.19%(P75)(P<0.05),扭黄茅氮吸收量高于扭黄茅单作5.79%(P0)和44.28%(P75),而磷吸收量高于单作13.80%(P0)和6.61%(P75)。
英文摘要:
      In order to understand the effect of phosphorus (P) application on grass biomass and nutrient absorption in the intercropping system of S. guianensis and H. contortus, two factors randomized block field experiments were designed with two planting patterns (intercropping and monoculture) and two P levels (P0 and P75, in which P0 indicated no P). The results showed that in the intercropping system, P application increased the biomass by 30.10% over the control and N uptake by 21.51% of H. contortus, but reduced biomass by 5.53%, N by 3.73%, and P by 3.18% of S. guianensis. In 2015, above-ground biomass of H. contortus in the intercropping system under P75 level was significantly higher by 31.00% than that of monoculture (P<0.05). Compared with the crops without P application, the above-ground biomass of S. guianensis and H. contortus in the intercropping system was increased by 41.31% and 52.68%, respectively, with P application. Under the two P levels (P>0.05), there were no significant differences in land equivalent ratio (LER), intercropping system productivity (SP) and interspecific competitiveness. However, S. guianensis was the weaker competition in the intercropping system with H. contortus. Under P0 and P75 levels, N and P uptake of S. guianensis in the intercropping system were lower than in monoculture system by 67.74% (P0) and 67.19% (P75), respectively (P<0.05). With the same situation, N uptake of H. contortus in the intercropping system was higher than monoculture system by 5.79% (P0) and 44.28% (P75), respectively, and P uptake was higher by 13.80% (P0) and 6.61% (P75).
查看全文  查看/发表评论  下载PDF阅读器