不同施肥条件下小白菜的物质积累与养分吸收  

Laws of substance accumulation and nutrient uptakes of cabbage in pot culture

作　　者：曾艳[1] 张杨珠[1] 龙怀玉[2] 周卫军[1] 廖超林[1] 侯金权[1] 

机构地区：[1]湖南农业大学资源环境学院,湖南长沙410128 [2]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《湖南农业大学学报（自然科学版）》2009年第1期33-38,共6页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家科技支撑计划项目(2006BAD17B08-03)

摘　　要：采用盆栽试验,研究在冲积性菜园土不同施肥条件下小白菜生育期的物质积累及其对N、P、K养分吸收的变化规律.结果表明,小白菜物质积累主要集中在移栽后30～45d,占全生育期的50%以上;每棵小白菜全生育期平均吸氮、吸磷、吸钾818.6、87.1、713.3g,各处理小白菜吸收N、P2O5、K2O的质量比为1∶0.23∶1.06;小白菜植株的氮素吸收总量与产量显著相关(r=0.935*),磷素吸收总量与产量极显著相关(r=0.970**),钾素吸收量与产量的相关性没有达到显著水平.A pot experiment was carried out to study dynamic variations of biomass accumulation of Chinese cabbage and N, P, K nutrient uptake at different growth stages as affected by various fertilizations under the alluvial vegetable soil. The results showed the substance auumulation of cabbage mainly appears in the middle vigorous growth period from the 30th to 45th days after transplanting. The absorbed nutrient rates for Chinese cabbage were： N, P2O5、 K2O 818.6, 87.1 、 713.3 g/pot with the ratio of 1 ： 0.23 ： 1.06, respectively, during the whole growing season. It was shown that N absorption had a significant correlation with output, r=0.935^＊. There was a significant correlation between P nutrient uptake and output, r=0.970^＊＊. There was a relatively poor correlation between available K and yield of cabbage.

关 键 词：小白菜 物质积累 养分吸收 

分 类 号：S158.3[农业科学—土壤学]