• ISSN 1008-505X
  • CN 11-3996/S
房增国, 赵秀芬. 胶东地区不同花生品种的养分吸收分配特性[J]. 植物营养与肥料学报, 2015, 21(1): 241-250. DOI: 10.11674/zwyf.2015.0127
引用本文: 房增国, 赵秀芬. 胶东地区不同花生品种的养分吸收分配特性[J]. 植物营养与肥料学报, 2015, 21(1): 241-250. DOI: 10.11674/zwyf.2015.0127
FANG Zeng-guo, ZHAO Xiu-fen. Nutrient absorption and distribution characteristics of different peanut varieties in Jiaodong peninsula[J]. Journal of Plant Nutrition and Fertilizers, 2015, 21(1): 241-250. DOI: 10.11674/zwyf.2015.0127
Citation: FANG Zeng-guo, ZHAO Xiu-fen. Nutrient absorption and distribution characteristics of different peanut varieties in Jiaodong peninsula[J]. Journal of Plant Nutrition and Fertilizers, 2015, 21(1): 241-250. DOI: 10.11674/zwyf.2015.0127

胶东地区不同花生品种的养分吸收分配特性

Nutrient absorption and distribution characteristics of different peanut varieties in Jiaodong peninsula

  • 摘要: 【目的】我国花生种质资源丰富,高产优质的新品种更新速度较快,且栽培方式、 栽培条件各异,不同类型花生对养分的吸收、 分配特性存在较大差异。为明确花生种植面积较大的胶东地区不同花生品种的养分需求特性,本研究分析比较了5个花生品种对N、P2O5、K2O的吸收、 分配特性,以期为该地区花生生产的科学施肥提供理论依据和技术指导。【方法】采用田间小区试验的方法,以鲁花11、丰花5、花育25、潍花10和青花6为试材,在平度市白埠镇良种繁殖场进行试验,并分别于花生播种后 50 d(开花期)、 90 d(荚果膨大期)和125 d(收获期)取样,同时测定花生根系(包括果针)、茎枝、叶片、荚果等器官的干鲜重及氮、磷、钾含量,收获时测定花生荚果产量、 百果重、 单株荚果数、 饱果率等指标。【结果】丰花5和花育25的荚果产量较高,平均为5578 kg/hm2,显著高于其他品种;青花6和潍花10则相对较低,分别是丰花5的82.0%和84.5%。大粒丰花5及小粒青花6的饱果率显著高于其他品种。不同花生品种各养分的累积分配特征及养分利用效应存在显著差异,鲁花11和花育25的 N、 P2O5、 K2O累积量均较高,潍花10的3种养分累积量显著低于其他品种;不同取样时期各花生品种对 N、P2O5、K2O 的吸收累积量均表现为N>K2O>P2O5。播后50 d,5个花生品种整株的养分需求量平均为 N 28.29 kg/hm2、P2O5 6.03 kg/hm2和 K2O 16.32 kg/hm2,分别占全生育期总需求量的13.0%、 15.2%和19.9%;N、 P2O5、 K2O累积速率最快的时期是播种后50~90 d,3种养分需求量平均为 N 134.02 kg/hm2、P2O5 28.17 kg/hm2和 K2O 72.35 kg/hm2,分别占总需求量的61.7%、 71.0%和79.6%;播种后 90~125 d,各品种对氮、 磷、 钾的需求量分别降低为54.77 kg/hm2、 5.45 kg/hm2和-6.60 kg/hm2,各占总需求量的 25.2%、 13.8%和-8.04%;生育前期养分主要累积在地上部,后期则大部分集中在荚果中,且整株花生的K2O可能会出现负吸收现象;潍花10荚果的 N、P2O5、K2O生产效率和干物质生产效率均较高。【结论】在本试验条件下,鲁花11和花育25为养分高效累积型品种,潍花10为养分生理利用高效率品种,丰花5为养分利用高效率品种;对于荚果养分分配系数较高的品种,尤其要重视营养生长期的养分供应。

     

    Abstract: 【Objectives】 Because of abundant peanut germplasm resources in China, accelerating of renewal of peanut species with characters of high yield and quality, and multiplicity of cultivation methodsand conditions, there are inevitably great differences on characteristics of nutrition uptake and distribution of different peanut types. The N, P2O5 and K2O uptake and distribution characteristics of five peanut varieties with large planting areas in Jiaodong Peninsula of Shandong province was studied to provide a theoretic basis and technical support for reasonable fertilization. 【Methods】 A field plot experiment was conducted in the breeding farm which belongs to Baibu town in Pingdu using Luhua11, Fenghua5, Huayu25, Weihua10 and Qinghua6 as experimental materials. Peanuts were sampled at the flowering, pot expanding and harvest stages respectively. Dry and fresh weights, N, P2O5 and K2O contents of peanut roots (including gynophore), stems, leaves and pods, and pod yield, 100-pod weight, pods per plant and full-pod rate of harvest stage peanut were determined. 【Results】 The results indicate that the pod yields of Fenghua5 and Huayu25 (averaged 5578 kg/ha) are significantly higher than those of the other varieties. The yields of Qinghua6 and Weihua10 are lower, and equal to 82.0% and 84.5% of the yield of Fenghua5 respectively. The full-pod rates of Large-seeded Fenghua5 and small-seeded Qinghua6 are significantly higher than those of other varieties. There are significant differences among N, P2O5 and K2O accumulations and distributions in different peanut varieties. Luhua11 and Huayu25 have the larger accumulations of N, P2O5 and K2O, and the nutrients accumulations of Weihua10 are remarkable lower than those of the other varieties. The N, P2O5 and K2O absorptions and accumulations of all peanut varieties are in order: N>K2O>P2O5 in different growth periods. 50 days after sowing, the average demands of N, P2O5 and K2O of the total plants of the five varieties are 28.29 kg/ha, 6.03 kg/ha and 16.32 kg/ha, and accounts for 13.0%, 15.2% and 19.9% of the total nutrients demand in whole growth period respectively. The quickest period of N, P2O5 and K2O absorption and accumulation of the five varieties appeared in the 50-90 days after the sowing, and the demands of three nutrients are 134.02 kg/ha, 28.17 kg/ha and 72.35 kg/ha in this stage and accounts for 61.7%, 71.0% and 79.6% of the total nutrients demand respectively. In the 90-125 days, the demands reduce to 54.77 kg/ha, 5.45 kg/ha and -6.60 kg/ha and accounts for 25.2%, 13.8% and -8.04% of total demands respectively. The N, P2O5 and K2O are mainly accumulated in the shoots at the early growth stages, while the nutrients are mainly distributed in pods in the late growth stages. For the K2O of the whole peanut plants, negative absorption phenomenon may occur and the variety of Weihua10 has higher production efficiency of nutrients and dry matter. 【Conclusions】 In conclusion, Luhua11 and Huayu25 have high nutrients absorption and accumulation efficiencies, Weihua10 has high physiological use efficiencies of the nutrients, and Fenghua5 has high nutrients use efficiencies in the condition of our experiment. For the peanut varieties which the pod nutrient distribution indexes are high, it is necessary to pay more attention to nutrient supply in the vegetative growth stage.

     

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