摘要
对奉新县澡下林场毛竹笋材两用林进行平衡施肥的试验 ,研究了不同平衡施肥配方对毛竹笋材两用林出笋数量、产量和竹笋地径 3个产量因子的影响 ,并建立了 2 0 0 0年各处理小区内土壤养分元素N、P、K、Ca、Mg含量与 2 0 0 1年各处理小区单位面积竹笋平均产量的相关方程。试验结果表明 :各平衡施肥配方对平均地径、单位立竹出笋数的影响与进行垦复的对照差异不显著 ,2 0 0 1年各小区竹笋平均地径显著大于 1 997和1 999年的平均地径 ;各养分元素对单位面积竹笋产量的贡献率大小依次为 :N >Mg >P >Ca>K ;K肥对增加竹材直径和提高竹材质量有良好促进作用 ;以产笋为主要目的的竹林 ,最佳施肥配方为N1P1K2 ;以产材为主要目的的竹林 ,最佳施肥配方为N2 P1K2 。
Through the experiment on shoot and timber use stand in Zaoxia forest center, Fengxin County, the influence of balance fertilizer on the yield factors has been studied, which are shoot numbers and shoot base diameter. Through the analysis of the year 2000's soil samples, the correlation equations between the contents of the elements N, P, K, Ca, and the unit area mean shoot yields of the 28 divisions respectively have been established. The experiment result indicates: the influence of balance fertilization on shoot numbers per stand is not marked; the shoot mean base diameter of every fertilizer treatment division is not larger than that of CK, but the shoot mean base diameter of year 2001's is remarkably larger than those of 1997's and 1999's; different effect orders of the five elements on the increase of unit area shoot yield is N>Mg>P>Ca>K; the optimum ratios of N, P, K are 1∶0.3∶0.43 and 1∶0.68∶0.98 respectively.
出处
《江西农业大学学报》
CAS
CSCD
2003年第1期48-53,共6页
Acta Agriculturae Universitatis Jiangxiensis
基金
中国-加拿大 (PPI/PPIC)国际合作项目
关键词
毛竹
笋材两用林
平衡施肥
产量
Phyllostachys heterocyla cv. pubescens
shoot and timber use stand
balance fertilization
yield
