不同施肥方法对江南油杉苗期生长的影响
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摘要
为探索江南油杉(Keteleeria fortunei var. cyclolepis)合理施肥方法,以江南油杉播种苗木为材料进行试验,分析了15种不同施肥方法对江南油杉苗木生长发育及干物质积累的影响。结果显示,除处理15(50%沼液)以外,其他14种施肥处理的江南油杉苗高、地径、地下鲜重、地上鲜重、地下干重、地上干重、总生物量、根颈粗、小根数量均显著高于对照处理(清水)(P <0.05),而对江南油杉苗期最大根长增长不显著。15种施肥处理对江南油杉地上部分的增长量的促进效果明显大于地下部分的增长量。15种施肥处理中以处理4(0.5%复合肥+0.1%尿素)对江南油杉半年苗苗高、地径生长及干物质积累效果最好,分别为22.750 cm、3.095 mm、2.341 g,分别是CK的340%、242%和618%倍。
Effects of different fertilization treatments on growth and dry matter accumulation of Keteleeria fortunei var. cyclolepis seedlings were studied to explore the rational fertilization by using K. fortunei var. cyclolepis as material. Results showed that seedling height, ground diameter, fresh underground weight, fresh ground weight,dry underground weight,dry ground weight,total biomass,root neck diameter and number of small roots of the other 14 fertilization treatments were significantly higher than those of CK(P < 0.05) except for treatment 15(50% biogas slurry). Fertilization had no significant effect on root length growth. The growth of aboveground part was significantly higher than that of the underground part by 15 treatments. Treatment 4(0.5% compound fertilizer + 0.1% urea) had the best effect on seedling height, ground diameter growth and dry matter accumulation of half-a-year seedlings,which were 22.750 cm,3.095 mm and 2.341 g,respectively,340%,242% and 618% times of CK,respectively.
Effects of different fertilization treatments on growth and dry matter accumulation of Keteleeria fortunei var. cyclolepis seedlings were studied to explore the rational fertilization by using K. fortunei var. cyclolepis as material. Results showed that seedling height, ground diameter, fresh underground weight, fresh ground weight,dry underground weight,dry ground weight,total biomass,root neck diameter and number of small roots of the other 14 fertilization treatments were significantly higher than those of CK(P < 0.05) except for treatment 15(50% biogas slurry). Fertilization had no significant effect on root length growth. The growth of aboveground part was significantly higher than that of the underground part by 15 treatments. Treatment 4(0.5% compound fertilizer + 0.1% urea) had the best effect on seedling height, ground diameter growth and dry matter accumulation of half-a-year seedlings,which were 22.750 cm,3.095 mm and 2.341 g,respectively,340%,242% and 618% times of CK,respectively.
引文
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[11]郝龙飞,刘婷岩,张连飞,等.氮素指数施肥对白桦播种苗养分承载和光合作用的影响[J].北京林业大学学报,2014,36(6):17-23.
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[13]吕慧,张楠,王健铭,等.土壤水肥作用对胡杨幼苗生长特性的影响研究[J].林业调查规划,2018,43(4):172-178.
[2]薛丹,陈金林,于彬,等.杨树苗木配方施肥试验[J].南京林业大学学报(自然科学版),2009,33(5):37-40.
[3]赵燕.毛白杨杂种无性系苗木施肥效应研究[D].北京:北京林业大学,2010.
[4]金国庆,余启国,焦月玲,等.配比施肥对南方红豆杉幼林生长的影响[J].林业科学研究,2007,20(2):251-256.
[5] JACOBS D F,SALIFU K F,SEIFERT J R. Growth and nutritional response of hardwood seedlings to controlled-release fertilization at outplanting[J]. Forest Ecology and Mangement,2005,214(1-3):28-39.
[6] HEISKANEN J,RIKALA R. Root growth and nutrient uptake of Norway spruce container seedlings planted in mounded boreal forest soil[J]. Forest Ecology and Management,2006,222(1-3):410-417.
[7]林建勇,蒋燚,梁瑞龙.江南油杉及中国油杉属植物的形态特征识别[J].广西林业科学,2014,43(4):431-434.
[8]广西壮族自治区林业科学研究院.广西树木志[M].北京:中国林业出版社,2012:18.
[9]刘雄盛,蒋燚,韦铄星,等.江南油杉ISSR-PCR反应体系建立与引物筛选[J].广西林业科学,2017,46(3):266-270.
[10]蒋燚,王勇,刘菲,等.江南油杉种质资源与苗木繁殖研究动态与展望[J].广西林业科学,2014,43(3):301-305.
[11]郝龙飞,刘婷岩,张连飞,等.氮素指数施肥对白桦播种苗养分承载和光合作用的影响[J].北京林业大学学报,2014,36(6):17-23.
[12]杨春婷,张永清,董璐,等.不同基因型苦荞幼苗对低磷胁迫的响应[J].植物科学学报,2018,36(6):859-867.
[13]吕慧,张楠,王健铭,等.土壤水肥作用对胡杨幼苗生长特性的影响研究[J].林业调查规划,2018,43(4):172-178.