| 盛果期日本栗生物量及养分吸收累积特性 |
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| 引用本文： | 郑瑞杰,王德永,于冬梅,刘枫.盛果期日本栗生物量及养分吸收累积特性[J].西北林学院学报,2014,29(3):87-91. |
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| 作者姓名： | 郑瑞杰 王德永 于冬梅 刘枫 |
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| 作者单位： | （辽宁省经济林研究所，辽宁 大连 116031） |
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| 摘 要： | 为了给盛果期日本栗合理施肥提供科学依据，以8年生嫁接繁育“辽栗10号”树为试验材料，采用整株解体调查的方法，研究了树体生物量的构成特点、各器官矿质营养元素含量和吸收累积分配特性。结果表明，单株生物量从休眠期冬剪后的11 147.12 g增至34 336.16 g，增幅达208.03%，其中，当年新生营养器官占50.97%，果实占16.57%，可见盛果期栗树生长量很大。叶片干物质与果实干物质比值为1∶1.09。栗树各器官中N、K累积量以叶片最高，P、Ca累积量以多年生枝干最高，Mg累积量以根部最高。盛果期栗树当年每株平均吸收N 227.62 g、P 17.97 g、K 74.84 g、Ca 199.38 g、Mg 42.01 g，N和Ca吸收累积量最多，K次之，Mg和P吸收累积量较少。每生产100 kg栗果需吸收氮（N）2.73 kg、磷（P2O5）0.49 kg、钾（K2O）1.08 kg，N、P2O5、K2O吸收比例为1∶0.18∶0.40。
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| 关 键 词： | 日本栗 生物量 器官 养分 吸收累积 |
Biomass and Uptake and Accumulation of Nutrition in Full Fruit Period of Japanese Chestnut |
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| ZHENG Rui-jie,WANG De-yong,YU Dong-mei,LIU Feng. Biomass and Uptake and Accumulation of Nutrition in Full Fruit Period of Japanese Chestnut[J].Journal of Northwest Forestry University,2014,29(3):87-91. |
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| Authors: | ZHENG Rui-jie WANG De-yong YU Dong-mei LIU Feng |
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| Institution: | （Liaoning Institute of Economic Forestry,Dalian,Liaoning 116031,China） |
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| Abstract: | The aim of this study was to investigate the properties of accumulation and distribution of mineral elements in full fruit period of Japanese chestnut and to establish a reasonable fertilization protocol.Field experiments were conducted to analyze the characters of biomass composition,contents of mineral elements and their accumulation in different parts of chestnut trees named for “Liaoli 10” which were 8 years old. The total plant biomass of chestnut trees increased from 11 147.12g to 34 336.16g,which accounted for 208.03%,new vegetative organs of the year accounted for 50.97%,fruits for 16.57% and old vegetative organs for 32.46%,respectively.The plant growth was great in full fruit period of chestnut. The ratio of leaf dry matter and fruit dry matter was 1∶1.09.The accumulation of nitrogen (N) and potassium (K) were the highest in the leaf,the accumulation of phosphorus (P) and calcium (Ca) were the highest in the perennial branches,the accumulation of magnesium (Mg) was the highest in the root. Total N,P,K,Ca and Mg amounts per plant in full fruit period of chestnut tree were N 227.62 g,P 17.97 g,K 74.84 g,Ca 199.38 g,Mg 42.01 g,respectively.The uptake and accumulation of N and Ca were the most than K,Mg and P. To attain 100 kg chestnut fruits,chestnut trees must uptake N 2.73 kg,P2O5 0.49 kg,K2O 1.08 kg,N∶P2O5∶K2O=1∶0.18∶0.40. |
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| Keywords: | Japanese chestnut biomass organ nutrient uptake and accumulation |
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