中国农学通报
中國農學通報
중국농학통보
CHINESE AGRICULTURAL SCIENCE BULLETIN
2013年
12期
115-119
,共5页
燕慧%罗建新%李宏图%袁雅威
燕慧%囉建新%李宏圖%袁雅威
연혜%라건신%리굉도%원아위
磷吸附/解吸%植烟土壤%成土母质%湖南
燐吸附/解吸%植煙土壤%成土母質%湖南
린흡부/해흡%식연토양%성토모질%호남
phosphorus adsorption/desorption%tobacco-planted soil%parent material%Hunan
为了探明湖南烤烟主产区土壤对磷的供肥潜力,为烟区合理施肥提供理论依据,研究了湖南烤烟主产区5种主要成土母质发育的常年植烟土壤对磷的吸附与解吸特性,并拟合了Langmuir等温吸附方程。结果表明:石灰岩母质土壤具有最大磷库和最大的缓冲容量,第四纪红土母质土壤吸附结合能最大,紫色板页岩具有最大的磷吸附饱和度;吸磷量之间的差别为:石灰岩>板页岩>第四纪红土>紫色砂页岩>紫色板页岩;石灰岩、第四纪红土、板页岩、紫色砂页岩、紫色板页岩母质土壤的标准需磷量分别为209.50、188.76、146.58、122.28、77.21 kg/hm2。土壤固磷作用强烈,以第四纪红土母质土壤的固磷能力最强,解吸率最低;紫色板页岩土壤的解吸能力最强,解吸率最高。
為瞭探明湖南烤煙主產區土壤對燐的供肥潛力,為煙區閤理施肥提供理論依據,研究瞭湖南烤煙主產區5種主要成土母質髮育的常年植煙土壤對燐的吸附與解吸特性,併擬閤瞭Langmuir等溫吸附方程。結果錶明:石灰巖母質土壤具有最大燐庫和最大的緩遲容量,第四紀紅土母質土壤吸附結閤能最大,紫色闆頁巖具有最大的燐吸附飽和度;吸燐量之間的差彆為:石灰巖>闆頁巖>第四紀紅土>紫色砂頁巖>紫色闆頁巖;石灰巖、第四紀紅土、闆頁巖、紫色砂頁巖、紫色闆頁巖母質土壤的標準需燐量分彆為209.50、188.76、146.58、122.28、77.21 kg/hm2。土壤固燐作用彊烈,以第四紀紅土母質土壤的固燐能力最彊,解吸率最低;紫色闆頁巖土壤的解吸能力最彊,解吸率最高。
위료탐명호남고연주산구토양대린적공비잠력,위연구합리시비제공이론의거,연구료호남고연주산구5충주요성토모질발육적상년식연토양대린적흡부여해흡특성,병의합료Langmuir등온흡부방정。결과표명:석회암모질토양구유최대린고화최대적완충용량,제사기홍토모질토양흡부결합능최대,자색판혈암구유최대적린흡부포화도;흡린량지간적차별위:석회암>판혈암>제사기홍토>자색사혈암>자색판혈암;석회암、제사기홍토、판혈암、자색사혈암、자색판혈암모질토양적표준수린량분별위209.50、188.76、146.58、122.28、77.21 kg/hm2。토양고린작용강렬,이제사기홍토모질토양적고린능력최강,해흡솔최저;자색판혈암토양적해흡능력최강,해흡솔최고。
In order to investigate the fertilizer supplying potential and provide the theoretical basis of rational fertilization of Hunan main tobacco-growing area, this experiment studied the characteristics of phosphorus adsorption and desorption on long-term tobacco-planted soil samples derived from 5 different parent materials in Hunan Province by simulating Langmuir equation. The results showed: soil derived from limestone possessed the maximum phosphorus capacity and the maximum buffering capacity, and soil derived from quaternary red clay possessed the maximum adsorption binding energy, meanwhile soil derived from purple slate shale got the highest degree of phosphorus sorption saturation. The difference of the P adsorption amount was:limestone>slate shale>quaternary red clay>purple sandy shale>purple slate shale. The standard required phosphorus of soil derived from limestone, quaternary red clay, slate, purple sandy shale, purple slate shale were 209.50, 188.76, 146.58, 122.28, 77.21 kg/hm2. Soils had strong fixation effect on phosphorus. Among of them, soil derived from quaternary red clay ranked the highest fixation capability and lowest desorption rate toward phosphorus, while soils from purple slate shale had the maximum desorption capability and the highest desorption rate.