文献类型：期刊文献

中文题名：不同养分环境下钙添加对柏木家系苗木生长和根系发育的影响

英文题名：Effects of calcium addition on growth and root development of Cupressus funebris families in different nutrient conditions

作者：袁承志[1,2] 陈坦[1] 张振[1] 金国庆[1] 丰忠平[3] 周志春[1] 郑一[1]

第一作者：袁承志

机构：[1]中国林业科学研究院亚热带林业研究所,浙江省林木育种技术研究重点实验室,富阳311400;[2]中南林业科技大学,长沙410000;[3]浙江省淳安县林业总场有限公司姥山分场,淳安311700

年份：2020

卷号：26

期号：5

起止页码：1161-1168

中文期刊名：应用与环境生物学报

外文期刊名：Chinese Journal of Applied and Environmental Biology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：浙江省“十三五”育种专项(2016C02056-5)资助。

语种：中文

中文关键词：柏木;家系;钙添加;生长;根系发育

外文关键词：Cupressus funebris;family;calcium addition;growth;root development

分类号：S51

摘要：研究不同养分环境下钙添加对柏木家系苗木生长和根系发育的影响,为柏木造林地选择和施肥管理提供理论依据.以5个柏木家系的1年生容器苗为材料,进行一个生长季的钙添加盆栽实验.实验分别在肥沃(添加3 g/kg NPK控释肥)和贫瘠(未施肥)两种土壤养分环境下,模拟3种浓度(0 g/kg、3 g/kg和6 g/kg)的钙添加对柏木家系苗木生长及根系发育的影响.结果表明:(1)肥沃条件下,柏木的株高、地径、全株干物质量、根长、根表面积和根体积分别是贫瘠条件下的1.46、1.14、1.67、1.28、1.45和1.65倍.(2)在贫瘠条件中,添加3 g/kg钙提早并延长了苗木的速生期,其株高、地径和全株干物质量较对照分别增加8.42%、6.06%和10.74%,而添加6 g/kg钙显著降低了柏木的株高、地径,较对照分别减少3.37%和5.66%;在肥沃条件中,随钙浓度的增加,柏木苗高的速生期出现推迟并缩短的现象,但株高和地径在不同钙处理间差异不显著.(3)在两种养分条件下,外源钙对柏木苗木的根系参数均有抑制作用.贫瘠条件下,3 g/kg钙处理抑制作用最强,柏木的根系参数在添加3 g/kg钙后较对照降低了12.20%、18.13%和23.41%;肥沃条件下,6 g/kg钙处理抑制作用最强,柏木的根系参数在添加6 g/kg钙后较对照降低了19.82%、17.00%和14.38%.(4)柏木家系的生长及根系发育对钙添加的响应不同.在贫瘠条件下,柏木生长及根系发育在家系间差异不显著,但株高和地径存在显著的家系×钙互作效应;在肥沃条件下,柏木生长及根系发育在家系间差异显著或极显著,柏木家系的株高、地径、全株干物质量、根茎干物质量和根体积存在显著的家系×钙互作效应.本研究表明在生产上可通过添加适量的钙来增加柏木在贫瘠立地条件下的高生长和干物质量;在相对肥沃的养分条件下可通过优良家系选育应用于生产.(图5表3参37)
This study focused on the effects of calcium addition on the growth and root development of cypress in different conditions, to provide a theoretical basis for land selection and fertilization management. Using five families of 1-year-old container seedlings as materials, the calcium addition experiment was performed in a growing season. The experiment simulated three concentrations of calcium(0 g/kg, 3 g/kg, and 6 g/kg) in two kinds of soil conditions: fertile(added 3 g/kg NPK fertilizer) and poor(unfertilized), to analyze the effects of calcium addition on seedling growth and root development of cypress families. The results showed that:(1) in fertile conditions, plant height, ground diameter, dry biomass, root length, root surface area, and root volume of cypress were 1.46 times, 1.14 times, 1.67 times, 1.28 times, 1.45 times, and 1.65 times greater than those in the poor condition.(2) In the poor conditions, 3 g/kg calcium advanced and prolonged the fast-growing period of seedlings, and increased the seedling height, ground diameter, and the whole plant dry biomass of cypress by 8.42%, 6.06%, and 10.74%, respectively, when compared with the control, while 6 g/kg calcium significantly decreased seedling height and ground diameter by 3.37% and 5.66%, respectively. In fertile conditions, the fast-growing period of seedling height was delayed and shortened by increase in added calcium, but there was no significant difference in seedling height and ground diameter between different calcium treatments.(3) In the two conditions, the addition of calcium significantly inhibited the root parameters of cypress. The inhibitory effect of 3 g/kg calcium treatment was the strongest, and the root parameters of cypress decreased by 12.20%, 18.13%, and 23.41% compared with the control after adding 3 g/kg calcium. Under fertile conditions, the inhibitory effect of 6 g/kg calcium treatment was the strongest, and the root parameters of cypress decreased by 19.82%, 17.00%, and 14.38% compared with the control after adding 6 g/kg calcium.(4) The responses of growth and root development of cypress families to calcium addition were different. In poor conditions, there was no significant difference in growth and root development between families. However, there was a significant family × calcium interaction effect on plant height and ground diameter, and there were significant or very significant differences in growth and root development in the fertile conditions. There were significant family × calcium interaction effects on seedling height, ground diameter, whole plant biomass, root dry biomass, stem dry biomass, and root volume of cypress families. In production, the high seedling growth and dry biomass of cypress can be increased by adding an appropriate amount of calcium under poor site conditions and can be induced by careful breeding under fertile conditions.