定点试验土壤理化性质检测数据（2020）

本数据集中包含三个表格，其中“种植点及采样信息”记录了种植点的经纬度、海拔信息及取样时间。“样品检测方法”表中列出了检测的项目、检测方法及主要仪器等，“2020年土壤理化性质检测数据”是2020年设置的定点试验土壤理化性质检测的结果数据，定点试验设置三个点，青海海北（HB）、甘肃合作（HZ）、西藏日喀则白朗（BL）,每个点设置7个肥料配比，每个配比设置三个重复。每个点分别在种植前（1st）、苗期（2nd）、成熟期（4th）三个时期取样，种植前每个试验地均匀取五个点，分别取土0-20cm、20-40cm、40-60cm、60-80cm、80-100cm五层；苗期和成熟期取样0-20cm、20-40cm两个土层。土样检测土壤pH,总氮、总磷、总钾、速效氮、速效磷、速效钾及阳性离子含量等指标，数据可靠。

This dataset contains three tables. The table "Planting Sites and Sampling Information" records the latitude, longitude, elevation and sampling time of each planting site. The table "Sample Testing Methods" lists the testing items, testing methods and main instruments used. The table "2020 Soil Physical and Chemical Property Testing Data" contains the results of fixed-point experimental soil physical and chemical property tests set up in 2020. Three fixed-point test sites were established: Haibei in Qinghai (HB), Hezuo in Gansu (HZ), and Bailang in Shigatse, Tibet (BL). For each site, 7 fertilizer ratios were set up, with 3 replicates for each ratio. Sampling was conducted at three stages for each site: pre-planting (1st), seedling stage (2nd) and maturity stage (4th). At the pre-planting stage, 5 evenly distributed sampling points were collected from each experimental plot, with soil samples taken from 5 layers: 0-20cm, 20-40cm, 40-60cm, 60-80cm and 80-100cm. For the seedling and maturity stages, soil samples were collected from two layers: 0-20cm and 20-40cm. Soil samples were tested for indicators including soil pH, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, available potassium and cation contents, etc. The data is reliable.

搜集汇总

背景与挑战

背景概述

该数据集包含2020年青海海北、甘肃合作和西藏日喀则白朗三个定点试验土壤的理化性质检测数据，涉及不同土层和生长时期的土壤pH、氮磷钾等指标。数据以Excel格式提供，覆盖了三个试验点、七个肥料配比和三个重复的详细检测结果。