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林业科学 ›› 2008, Vol. 44 ›› Issue (1): 13-18.doi: 10.11707/j.1001-7488.20080103

• 论文 • 上一篇    下一篇

不同立地下白桑-花生间作系统生物量及营养元素的积累*

方路斌1 李玉灵1 黄大庄1 赵振兴2   

  1. (1.河北农业大学 保定071000; 2.河北省林业局 石家庄050081)
  • 收稿日期:2006-11-10 修回日期:1900-01-01 出版日期:2008-01-25 发布日期:2008-01-25
  • 通讯作者: 黄大庄

Biomass and Nutrient Accumulation in the Morus alba and Peanut Intercropping Ecological System in Different Habitats

Fang Lubin1,Li Yuling1,Huang Dazhuang1,Zhao Zhenxing2   

  1. (1.Agricultural University of Hebei Baoding 071000; 2.Forestry Bureau of Hebei Shijiazhuang 050081)
  • Received:2006-11-10 Revised:1900-01-01 Online:2008-01-25 Published:2008-01-25

摘要:

对2种不同立地下桑粮间作生态系统的土壤状况、生物量、生产力及营养元素积累进行研究。结果表明:2种立地条件下土壤理化性质存在明显差异,丘陵梯田白桑平均冠幅、条长、基茎、条数、地上总生物量分别只有平原沙地白桑的80.00%、70.85%、76.19%、68.46%和67.75%;平原沙地和丘陵梯田桑粮间作系统地上总生物量分别为10.64和5.65 t·hm-2,其中平原沙地系统内白桑占47.84%,花生占52.16%,丘陵梯田系统内白桑占54.69%,花生占45.31%,平原沙地系统生产力达到11.11 t·hm-2a-1,为丘陵梯田的190倍;2种立地下5种营养元素总积累量差异明显,分别为281.98 和140.80 kg·hm-2,其中平原沙地系统内白桑占37.03%,花生占62.97%,丘陵梯田系统内白桑占45.22%,花生占54.78%;不同立地条件下,丘陵梯田间作系统5种营养元素总量的归还率为34.43%,比平原沙地高23.23%。

关键词: 白桑-花生间作, 生物量, 营养元素

Abstract:

The soil conditions,biomass,productivity and the nutrient accumulation of the Morus alba and peanut intercropping ecological system of two different habitats were studied. The results showed: The physical and chemical properties of the two habitats were obviously different. The average crown width,length of branches,diameter of branches,number of branches and above ground biomass of M. alba in relevant adverse habitat only accounted for 80.00%,70.85%,76.19%,68.46%,67.75% of those in hill terrace sandlot respectively. The total aboveground biomass was 10.64 t·hm-2 in plain sandlot and 5.65 t·hm-2 in hill terrace. The biomass of M. alba accounted for 47.84% and peanuts for 52.16%; In hill terrace,M.albaaccounted for 5469% and peanuts for 45 .31%. The annual net productivity of the M.albaand peanut intercropping system in the plain sandlot was 11.11 t·hm-2a-1,which was 0.90 times more than that in hill terrace. The total accumulations of 5 elements in two habitats were significantly different,they were 281.98 and 140.80 kg·hm-2 respectively . In plain sandlots system,M. alba accounted for 37.03% and peanuts accounted for 62.97%; In hill terrace system,M. alba accounted for 45.22% and peanut accounted for 54.78%. The total returned rate of five nutrient elements in the M.albaand peanut intercropping ecological system in hill terrace was 34.43%,which was 23.23% higher than that in plain sandlot.

Key words: Morus alba and peanut intercropping, biomass, nutrient elements