江西省4种水稻土养分限制因子的初步研究

来源 :江西农业大学学报 | 被引量 : 0次 | 上传用户:pengpenghu
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对来自江西农业大学农学实验站、余干县梅岗乡、余干县华林岗乡及星子县廖化镇等4种水稻土,进行实验室分析与吸附试验,并在此基础上确定温室盆栽试验方案,研究4种土壤的养分状况及对高粱生长的影响,为制订水稻施肥方案提供参数依据。结果表明,江西农业大学实验站水稻土主要缺P,N,K,S,Mo,Zn,B,Mg等,盆栽不施这些元素,相对产量分别是17.9%,29.1%,41.8%,53.7%,58.2%,58.2%,60.4%,63.4%。余干县梅岗乡水稻土主要缺P,N,Ca,S,K,Zn,B,Cu,Mg等,盆栽不施这些元素,相对产量分别是28.8%,30.3%,40.1%,62.1%,71.2%,74.2%,75.8%,78.8%,78.8%。余干县华林岗乡水稻土主要缺P,N,S,K,Zn,盆栽不施这些元素,相对产量分别是41.0%,41.5%,45.7%,51.3%,58.0%;星子县廖化镇水稻土主要缺乏N,P,B,Zn,S,Mg,盆栽不施这些元素,相对产量分别是17.5%,24.0%,62.7%,64.1%,64.5%,66.8%。 Laboratory analysis and adsorption experiments were conducted on four kinds of paddy soils from Agronomy Station of Jiangxi Agricultural University, Meigang Township of Yugan County, Hualingang Township of Yugan County and Liaohua Town of Xingzi County, and on the basis of which, greenhouse pots The experimental plan was to study the nutrient status of four kinds of soils and their effects on the growth of sorghum so as to provide the basis for formulating the fertilization plan of rice. The results showed that there was mainly no P, N, K, S, Mo, Zn, B and Mg in the paddy soil at the Experimental Station of Jiangxi Agricultural University. The relative yields were 17.9% and 29.1%, respectively .8%, 53.7%, 58.2%, 58.2%, 60.4%, 63.4%. Ponds in Meigang Township of Yugan County were mainly lacking P, N, Ca, S, K, Zn, B, Cu, Mg, etc. The relative yields were 28.8%, 30.3%, 40 .1%, 62.1%, 71.2%, 74.2%, 75.8%, 78.8%, 78.8%. The main paddy soil in Hualingang Township of Yugan County is lack of P, N, S, K and Zn. The relative yields are 41.0%, 41.5%, 45.7% and 51.3% respectively. , 58.0% respectively. The main lack of N, P, B, Zn, S and Mg in paddy soil of Liaohua Town, Xingzi County was that the relative yields were 17.5%, 24.0% and 62.7% , 64.1%, 64.5%, 66.8%.
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