摘要
采用基质培养，研究不同氮素形态及配比对黄瓜生长和性别分化的影响，结果表明：用纯NO－N营养液处理，黄瓜植株营养生长旺盛．当NH－N占25％和50％时，则明显促进黄瓜的生殖生长，表现为第一雌花比纯NO-N处理低0．4和0．6节，雌花率增加23．9和31．0个百分点，单株产量增加35．3％和28．7％；叶片和果实中矿物元素钾、铁、锌分别增加0．02～1．41％、0．11～1．24μg／gDW、37．6～47．0μg／gDW，镁、锰、铜差异不大．黄瓜生育期不同对氮素形态的敏感性有差异，幼苗期较生长旺期不敏感．
The effects of different N forms and ratios on the growth and sex expression of cucumber werestudied. The results showed that the vegetative growth was best with 100% NO3-N treatment. WhenNH+-N was 24 % or 50 %, the reproductive growth was promoted, the node position of first female flowerwas decreased, the rate of female flowers increased, and the yield per plant increased significantly; ofthe mineral contents in leaves and fruits, K content increased by 0.02~ 1 .41 %, Fe 0.11 ~1 .24μg / gDW,and Zn 37.6~ 47.0μg / gDW compared to 100% NO+3-N treatment. The sensitivity of cucumber toNH+4-N in the different growth periods was different: the young plants were less sensitive than the oldones.
出处
《浙江农业学报》
CSCD
1995年第3期226-229,共4页
Acta Agriculturae Zhejiangensis
关键词
黄瓜
氮素形态
性别
生长
分化
Cucumber
Nitrogen form
Sex
Mineral elements
Expression
Ratio
