摘要
通过对庄浪县白堡乡乱庄村5社坡地黄绵土、川地黑麻土营养元素速效含量及其在土壤中吸附能力的测定,以及温室盆栽试验,认为黑麻土对作物产量的主要限制因子及限制程度从大到小的顺序是N、P、K、M o;黄绵土对作物产量的主要限制因子及限制程度从大到小的顺序是N、P、Cu;两者共同的主要限制因子是N、P;在N、P充足的情况下,K是黑麻土的主要限制因子。
Haplic Kastanzens and Calcaric Cambisois soil were analyzed to diagnose the nutrient shortage at Baipu in Zhuanglang county, and potted planting in greenhouse. The results showed that N.P,K.Mo were the primary limiting nutrient factor in Haplie Kastanzens, and the deficit degree is N〉P〉K〉Mo on Haplie Kastanzens. N.P.Cu were the primary limiting nutrient factors in Calearie Cambisois, and the deficit degree is P〉N〉Cu on Calearie Cambisois of production. The nutrient limited factors on these two kinds of soil are N and P, If N and P are enough to supply, K is the important limited factor of Haplie Kastanzens.
出处
《甘肃农业科技》
2007年第11期7-10,共4页
Gansu Agricultural Science and Technology
关键词
黑麻土
黄绵土
营养元素
诊断
限制因子
Haplic Kastanzens
Calcaric Cambisois
Nutrient elemental
diagnose
Limiting factor
