刘子凡,苏必孟,黄洁,魏云霞,张婷婷.木薯花生间作模式养分吸收与利用优势的比较[J].湖南农业大学学报:自然科学版,2019,45(5):.
木薯花生间作模式养分吸收与利用优势的比较
  
DOI:
中文关键词:  木薯  花生  间作  产量  养分吸收与利用
英文关键词:cassava  peanut  intercropping  yield  nutrition absorption and utilization
基金项目:农业部现代木薯产业技术体系建设专项(CARS–11–hnhj);中国热带农业科学院热带作物品种资源研究所非营利性科研机构改革专项 (pzsfyl–201807)
作者单位
刘子凡,苏必孟,黄洁,魏云霞,张婷婷 1.海南大学热带作物学院海南 海口 5702282.中国热带农业科学院热带作物品种资源研究所/农业农村部木薯种质资源保护与利用重点实验室海南 儋州 571737 
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中文摘要:
      设置3种木薯花生间作模式(1行木薯间作2行花生(M1H2)、2行木薯间作3行花生(M2H3)、2行木薯间作4行花生(M2H4) ),以木薯和花生单作为对照,研究作物对N、P、K的吸收与利用效率。结果表明:1)3种间作模式在作物产量、磷钾吸收和氮磷钾利用效率上均具有显著间作优势,M1H2和M2H4模式在产值上具有显著的间作优势,M2H4模式的系统产量当量比和产值当量比显著大于M1H2和M2H3模式的,系统产量当量比与系统磷钾利用效率、系统氮吸收当量比、木薯磷钾利用效率当量比、木薯氮吸收当量比呈显著正相关;2)与木薯单作相比,3种间作模式木薯在产量、产值、磷钾吸收、氮磷钾养分利用效率上均具有显著优势,木薯产量当量比与系统磷钾利用效率当量比、系统氮吸收当量比、磷钾利用效率当量比、氮吸收当量比呈显著正相关;3)与花生单作相比,M1H2和M2H3模式花生在产量、产值上劣势显著,M1H2模式花生在磷吸收、氮磷钾养分利用效率上具有显著的劣势,M2H3模式花生在氮磷吸收上具有显著优势;花生产量当量比与花生氮磷钾利用效率当量比呈显著正相关。推荐选用产量和产值优势最佳的M2H4木薯花生间作模式。
英文摘要:
      In order to investigate N, P, K nutrient absorption and utilization efficiency in cassava-peanut intercropping system, five treatments on field experiment were conducted including mono-cropping cassava, mono-cropping peanut, one row cassava intercropping with two rows peanut(M1H2), two rows cassava intercropping with three rows peanut(M2H3) and two rows cassava intercropping with four rows peanut(M2H4). The results showed that: 1) The 3 intercropping systems showed intercropping advantage(IA) in yield, P and K absorption, N, P and K utilization. M1H2 and M2H4 showed significant IA in values. The yield equivalent ratio(Y) and value equivalent ratio(V) of the M2H4 were significantly higher than those of the M1H2 and M2H3. Y showed significantly positive correlation with P, K utilization efficiency(UP, UK), N absorption equivalent ratio(AN), P, K utilization efficiency equivalent ratio of cassava(UMP, UMK) and N absorption equivalent ratio of cassava(AMN) in the intercropping system. 2) Compare to mono-cropping cassava, cassava in 3 intercropping models showed IA in yield, value, P absorption, K absorption, and N, P, K utilization. Yield equivalent ratio of cassava(YM) showed significantly positive correlation with UP, UK, AN and UMP, UMK, AMN. 3) Compare to mono-cropping peanut, M1H2 and M2H3 showed significant intercropping disadvantages(ID) in the yield and value of peanut. There was ID in peanut P absorption and N, P, K utilization in M1H2, while there was IA in N, P absorption of the peanut in the M2H3. The yield equivalent ratio of peanut(YH) was significantly positively correlated with N, P, K utilization efficiency equivalent ratio of the peanut(UHN, UHP, UHK). In conclusion, M2H4 was the best model in 3 intercropping models.
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