清晨好,您是今天最早来到科研通的研友!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您科研之路漫漫前行!

物理
出处
期刊:Coffee Science [Coffee Science]
卷期号:14 (3) 被引量:1
标识
DOI:10.25186/cs.v14i3
摘要

In soil sampling, the collection site and the tool used may induce errors that can compromise the results of the chemical analysis and, consequently, the definition of corrective and fertilizer doses. The objective in this study was to evaluate soil sampling sites and tools in a coffee growing area. The experiment was carried out in a field in the municipality of Alfenas-MG, in a 35-year coffee field. A randomized block design was used in a 3 x 5 factorial scheme and 4 replications, totaling 60 experimental units. The treatments consisted of 3 sampling sites: in the fertilizer strip (located in the projection of the plant canopy); between rows; and in the total area, with 1/3 of the samples collected under the canopy and close to the plant stem, 1/3 in the canopy projection and 1/3 collected between rows; and 5 sampling tools: Dutch auger; screw auger; probe; hoe and drill. Soil samples were collected at a depth of 0 to 0.2 m, and each composite sample was obtained by assembling and mixing 20 single samples. At each sampling point, an area of 2m 2 was delimited, in which simple samples were collected in all the evaluated places and with all the tools used. The following parameters were determined in the soil samples: pH in CaCl2; potential acidity (H+Al); organic matter; P, extracted by Mehlich; K + , Ca 2+ , Mg 2+ and base saturation. In a coffee-growing area, he fertilizer strip (canopy projection) has topsoil with higher acidity and lower contents of organic matter and nutrients P, K + , Ca 2+ and Mg 2+ than between rows. The tools used for soil sampling do not influence the results of soil chemical analysis in the coffee-growing area.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
肆肆完成签到,获得积分10
5秒前
yuntong完成签到 ,获得积分10
21秒前
老宇126发布了新的文献求助20
27秒前
TiY完成签到 ,获得积分10
28秒前
共享精神应助zimo采纳,获得10
1分钟前
2分钟前
2分钟前
3分钟前
老宇126发布了新的文献求助20
3分钟前
桐桐应助zxc采纳,获得10
3分钟前
3分钟前
3分钟前
3分钟前
3分钟前
习月阳完成签到,获得积分10
3分钟前
4分钟前
4分钟前
4分钟前
暮雪残梅完成签到 ,获得积分10
4分钟前
汉堡包应助老宇126采纳,获得20
4分钟前
merrylake完成签到 ,获得积分10
4分钟前
冲刺的小王完成签到,获得积分10
4分钟前
所所应助勤劳的铭采纳,获得10
4分钟前
扑流萤发布了新的文献求助10
5分钟前
扑流萤完成签到,获得积分10
6分钟前
6分钟前
老宇126发布了新的文献求助20
6分钟前
沙海沉戈完成签到,获得积分0
7分钟前
老宇126完成签到,获得积分10
7分钟前
7分钟前
勤劳的铭发布了新的文献求助10
7分钟前
勤劳的铭完成签到,获得积分10
7分钟前
7分钟前
zxc发布了新的文献求助10
7分钟前
孤独蘑菇完成签到 ,获得积分10
8分钟前
快递乱跑完成签到 ,获得积分10
8分钟前
眠眠清完成签到 ,获得积分10
9分钟前
maggiexjl完成签到,获得积分10
10分钟前
11分钟前
青山完成签到,获得积分10
12分钟前
高分求助中
The late Devonian Standard Conodont Zonation 2000
The Lali Section: An Excellent Reference Section for Upper - Devonian in South China 1500
Nickel superalloy market size, share, growth, trends, and forecast 2023-2030 1000
Smart but Scattered: The Revolutionary Executive Skills Approach to Helping Kids Reach Their Potential (第二版) 1000
Mantiden: Faszinierende Lauerjäger Faszinierende Lauerjäger 800
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 800
A new species of Coccus (Homoptera: Coccoidea) from Malawi 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3244770
求助须知:如何正确求助?哪些是违规求助? 2888417
关于积分的说明 8252853
捐赠科研通 2556875
什么是DOI,文献DOI怎么找? 1385454
科研通“疑难数据库(出版商)”最低求助积分说明 650161
邀请新用户注册赠送积分活动 626269