宁夏扬黄新灌区春小麦产量的土壤养分限制因子的初步研究  

Limiting factors on wheat yields in the new irrigation area of Yanghuan, Ningxia

作　　者：张学军[1] 桂林国[1] 王兴仁[2] 张福锁[2] 罗代雄[1] 

机构地区：[1]宁夏农林科学院土肥所,宁夏银川750002 [2]中国农业大学,北京100094

出　　处：《土壤通报》2000年第4期183-184,共2页Chinese Journal of Soil Science

摘　　要：盆栽试验和田间试验的结果表明 ,N、P、Zn和Mn是淡灰钙土上春小麦产量的土壤限制因子 .N P配施显著提高了春小麦的产量 .在N、P基础上 ,缺Zn、缺Mn影响籽粒产量 ,缺Mn影响叶干重、穗数和穗粒数 。Pot and field experiments revealed that the nutrients of N, P, Zn, and Mn were the main limiting factors for wheat yields on light Sierozem in Ningxia. The compound application of N and P increased the wheat yield significantly. On the bases of using N and P, lacking of Zn and Mn could reduce the yields. However, lacking of Mn affected dry weight of leaves, ear numbers, and seed numbers of an ear, and lacking of Zn influenced dry weight of roots and the weight of 1000 seeds.

关 键 词：淡灰钙土 土壤养分限制因子 春小麦 产量 

分 类 号：S512.120.6[农业科学—作物学] S158.5