紫荆农林复合系统大豆的光强与施肥研究

IF 0.5 Q4 AGRONOMY
Zulfikar Affandi, D. Purnomo, S. Supriyono
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引用次数: 3

摘要

解决土地利用变化导致的农业用地面积减少的措施之一是通过农林复合系统(AF),如在合欢树间种植。本研究结合试验,旨在研究1.5年生紫杉树的光特性及施肥对大豆生长的影响,并测试以紫杉树为基础的农林复合系统中德加1号品种的大豆产量。本研究采用分块随机区组设计(RBD),以光照强度为主区,施肥为副区。光照强度分为四个等级:高光强地(AF外地)、高光强地(1425 ha-1密度紫杉树的辐射透射分数(RTF))、中高光强地(2850冠层修剪的紫杉树密度的RTF)、低光强地(2850冠层未修剪的紫杉树密度的RTF)。在小样地施用各种肥料,如合欢凋落叶、合欢凋落叶+磷+钾,不施肥。共得到12个处理,每个处理重复3次,共36个试验单元。本研究结果表明,紫花苜蓿极有潜力应用AF系统栽培大豆。林冠下通过光(RTF)取决于每棵树之间的距离,可以通过修剪林冠来改善。RTF的增加促进了营养和生殖生长。与草地生物量产量(3.9吨ha-1)相比,修剪冠层(RTF: 49% = 28440 lux)密度为2850棵ha-1时大豆产量最高(3.3吨ha-1)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Study of Light Intensity and Fertilizer on Soybean in Albizia chinensis Agroforestry System
One of the efforts to solve the decreasing of agriculture land area caused by land use change is through agroforestry system (AF), such as the cultivation among the Albizia chinensis trees. This research, along with the experiment, aims at studying the light characteristic of 1.5 years oldAlbizia c and the effect of fertilization on the growth of soybean and testing the soybean yield of Dega 1 varieties in agroforestry system based on Albizia c. Using the split-plot Randomized Block Design (RBD) as the experiment, the intensity of light was employed as the main plot whereas the fertilizer was used as the subplot in this study. There were four levels of light intensity:  land with high light intensity (lands outside AF), rather high light intensity (radiation transmission fraction (RTF) among Albizia c 1425 ha-1 density), medium-high light intensity (RTF among 2850 Albizia c density with pruned canopy), rather low light intensity (RTF among 2850 Albizia c  density with unpruned canopy). As the subplot were some various fertilizers such as Albizia c litter, Albizia c litter + phosphorus (P) + potassium (K), and without any fertilization. Totally 12 treatments were obtained and each of those treatments was replicated three times, consequently consisting of 36 experiment units. The result of this research shows that  Albizia c was exceedingly potential for the soybean cultivation with AF system. The passing light under the canopy (RTF) depended on the distance between each tree and could be improved by pruning the canopy. The increasing RTF increased vegetative and generative growth. The highest soybean production (3.3 tons ha-1) could be achieved in 2850 trees ha-1 density with pruned canopy (RTF: 49% equals to 28440 lux) compared with biomass production in open land (3.9 tons ha-1).
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来源期刊
Sains Tanah
Sains Tanah Environmental Science-Pollution
CiteScore
1.90
自引率
0.00%
发文量
16
审稿时长
8 weeks
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