氮肥水平对甘蓝产量和品质及土壤硝态氮含量的影响  

Yield and Quality of Brassica oleracea and NO_3^-—N Content in Soil with Different Nitrogen Fertilizer Level

作　　者：熊亚梅[1] 梁银丽[1] 周茂娟[1] 陈甲瑞[1] 杜社妮[1] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨陵712100

出　　处：《西北植物学报》2007年第4期839-843,共5页Acta Botanica Boreali-Occidentalia Sinica

基　　金：中国科学院知识创新项目(KZCX2-XB2-05-01);国家科技支撑项目(2006BAD09B07);中国科学院安塞站和中国科学院水土保持研究所领域前沿项目(SW04302)资助

摘　　要：以京丰1号甘蓝品种为试验材料,通过田间小区试验研究了不同氮肥用量对甘蓝产量、品质以及土壤NO3--N含量的影响.结果表明,(1)随着施氮量的增加,甘蓝产量呈先升高后降低趋势,并于施氮量为185.14 kg/hm2时产量最高(25.86 kg/8.4 m2).(2)随着施氮量的增加,甘蓝的NO3--N含量明显增加,而Vc和可溶性糖含量则逐渐下降,并且残留在土壤中的NO3--N含量持续增加.因此,为达到优质高产并同时保持土壤的可持续利用和提高氮肥利用率,在生产实践中甘蓝适宜氮肥施用量为185.14 kg/hm2.According to the field experiments, cabbage（Brassica oleracea var. capitata） yield, cabbage quality and nitrate content in soil under different nitrogen level were studied. The results showed that under a definite level,cabbage yield increased significantly as the using amount of nitrogen increased. The yield of cabbage was the highest under nitrogen fertilizer as 185.14 kg/hm^2. NO3^--N contents in cabbage and soil increased with the nitrogen levels arise. However,Vc and soluble sugar content of fresh cabbage decreased with the increasing of nitrogen. Therefore, for human health, nitrogen level should be maintained around 185.14 kg/hm^2 ,in order to increasing yield,improving quality of vegetable and protecting environment.

关 键 词：氮肥 甘蓝 产量 品质 硝态氮含量 

分 类 号：Q945.78[生物学—植物学] S635[农业科学—蔬菜学]