摘要
以温室黄瓜为材料进行试验,通过不同时期追施尿素,研究黄瓜硝酸盐、亚硝酸盐含量的变化.结果表明,在120 000kg/ha的目标产量下,尿素施用总量1 250 kg/ha,每21天左右追肥一次,一生追4~5次较合理.这种施肥模式下,黄瓜产量较高,品质安全,黄瓜亚硝酸盐残留较少,是温室黄瓜氮肥适宜用量和安全追肥间隔期.
The experiment of greenhouse cucumber about urea in different periods was carried out to study the content of nitrate and nitrite in cucumber. The results showed that it was reasonable for cucumber in top dressing once every 21 days and four or five times in total lifetime under the target yield by 8 000 kg/667 m2. nitrogen application of 110 kg/667 m2 By this kind of application mode,the yield of cucumber was higher and the quality was safer, and nitrite residual was less. It was a suitable dosage of urea and security clearances for greenhouse cucumber.
出处
《韶关学院学报》
2016年第2期41-45,共5页
Journal of Shaoguan University
基金
内蒙古自治区人才开发基金项目(2010
2013年度)
关键词
氮肥
黄瓜
硝酸盐
亚硝酸盐
nitrogen fertilizer
cucumber
nitrate
nitrite
