文献类型：期刊文献

中文题名：低肥力土壤施用氮磷钾肥影响柏木家系根系发育和养分吸收对钙肥的响应

英文题名：Effects of NPK fertilization on the response of root growth and nutrient absorption of seedlings of Cypress funebris to calcium addition in low fertility soil

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

第一作者：郑一

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,浙江富阳311400;[2]林木遗传育种国家重点实验室/东北林业大学,黑龙江哈尔滨150040;[3]浙江省淳安县林业总场有限公司姥山分场,浙江淳安311700

年份：2020

卷号：26

期号：8

起止页码：1501-1512

中文期刊名：植物营养与肥料学报

外文期刊名：Journal of Plant Nutrition and Fertilizers

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

基金：浙江省农业(林木)新品种选育重大科技专项(2016C02056-5)。

语种：中文

中文关键词：柏木;钙;土壤肥力;根系;养分吸收量

外文关键词：Cupressus funebris;calcium;soil fertility;root system;nutrient absorption

分类号：S791.41

摘要：【目的】探讨柏木(Cupressus funebris Endl)家系在不同养分条件下根系发育和营养吸收对钙添加的响应,为提高柏木苗木质量和林木生产力及造林地选择提供理论依据。【方法】以柏木5个家系的1年生幼苗为材料,分别在施3 g/kg NPK肥和未施NPK肥两小区内,设置施CaSO40、3和6 g/kg(依次记为Ca0、Ca3和Ca6)3个水平,分析柏木家系生长与根系形态及氮磷钙吸收量对钙肥添加的响应。【结果】在施3 g/kg NPK肥的小区中,添加钙对柏木的苗高、干物质量积累和氮磷吸收量影响不显著,抑制了D2和D3径级根系的发育;柏木钙吸收量在Ca6处理下最高,比Ca0处理提高73.86%;柏木苗高、干物质量及氮磷钙素的吸收量在家系间差异显著,T2家系表现最好。在未施NPK肥的小区中,Ca3处理明显提高了柏木的苗高、根干物质量和茎干物质量,增加了磷和钙的吸收量,分别比Ca0处理高出9.15%、19.85%、16.67%、27.46%和44.02%;Ca6处理提高了钙吸收量,比Ca0处理高出39.95%,但抑制柏木幼苗苗高和D1~D4径级根系的发育。不论施NPK肥与否,家系与钙处理对柏木的株高和根干物质量存在着显著的互作效应。【结论】在低肥力土壤上,施用氮磷钾肥会降低钙肥对柏木苗生长和养分吸收的影响,应选择优良家系进行育苗造林,不需要增加钙肥;在不施用氮磷钾肥时,应添加少量钙肥(CaSO43 g/kg),以促进苗木对钙和磷的吸收。
【Objectives】To explore the response of root development and nutrient absorption of Cupressus funebris families to calcium addition under different nutrients,to provide theoretical basis for improving cypress seedling quality,forest productivity and forestland selection.【Methods】1-year-old seedlings of 5 cypress families were used as materials to set up CaSO40,3 and 6 g/kg treatments(Ca0,Ca3 and Ca6)in 3 g/kg NPK and no NPK fertilizer plot.The responses of cypress family growth,root morphology and N,P and Ca absorption to CaSO4 fertilizer were analyzed.【Results】In 3 g/kg NPK fertilizer plot,the addition of calcium had no significant effect on the seedling height,dry matter weight,N and P absorption of cypress,but inhibited the development of D2 and D3 roots,the Ca absorption of cypress was the highest under Ca6 treatment,which was higher than Ca0 treatment by 73.86%.There was significant difference in seedling height,dry matter weight and N,P and Ca absorption among 5 cypress families,and T2 families performed best.In no NPK fertilizer plot,Ca3 treatment significantly increased the seedling height and root and stem dry matter weight,P and Ca absorption,which were respectively higher than Ca0 treatment by 9.15%,19.85%,16.67%,27.46%and 44.02%.Ca6 treatment increased Ca absorption,which was higher than Ca0 treatment by 39.95%,but inhibited the seedling height and the development of D1–D4 root system.With or without NPK fertilizer application,families and CaSO4 treatments had significant interaction effects on cypress height and root dry matter weight.【Conclusions】When NPK fertilizer is applied in low fertility soil,Ca fertilizer will not affect the growth of aboveground and root parts of cypress seedlings,but cypress families will.Without application of NPK fertilizer,applying a certain rate of Ca fertilizer could improve the Ca and P absorption,and the development of fine roots of the cypress seedlings.Therefore,good families should be considered firstly for seedling cultivation and afforestation,the supply of CaSO4 is not so necessary under application of NPK fertilizer and can add a certain rate of Ca fertilizer under no NPK fertilization.