有机氮与无机氮配施对大白菜生长与产量的影响

Effects of Proportioning Fertilization of Organic and Inorganic N on Growth and Yield of Chinese Cabbage

研究总养分相同时有机氮与无机氮不同配比施肥对大白菜生长与产量的影响。结果表明,不同配比施肥处理均能提高大白菜的单株重,当有机氮∶无机氮为2∶1时大白菜的产量最高;对粘壤土来说,当有机氮∶无机氮为1∶1时大白菜的净菜率最高,达75.8%,比对照高2.8个百分点;对沙壤土来说,不同施肥处理皆可提高大白菜的净菜率,当有机氮∶无机氮为1∶2时,净菜率最高,达75.4%。

With fertilizing no N fertilizer as CK, the Chinese cabbage was planted on viscous and sandy loam soil to study the influences of different proportioning fertilizations of organic N （ON） and inorganic N （IN） on growth and yield of Chinese cabbage when the total nutrients were same. The results showed that the different proportioning fertilizations could enhance the weight per plant of Chinese cabbage,and its yield was the highest when the ratio of ON to IN was 2：1.As for viscous loam soil, when the ratio of ON to IN was 1：1 ,the net vegetable rate of Chinese cabbage was the highest（75.8%）,and 2.8% higher than CK.As for sandy loam soil, the different fertilizations could enhance the net vegetable rate of Chinese cabbage, when the ratio of ON to IN was 1：2, the net vegetable rate of Chinese cabbage was highest（75.4%）.