摘要
在磷钾肥基础上连续施用尿素、碳铵和有机肥配施探讨对叶菜高强度种植的肥效,结果表明珠江三角洲秋冬季节高强度的叶菜种植中,随着气温降低叶菜产量有逐渐增加的趋势。在磷、钾肥一致的情况下,连续种植4茬叶菜,尿素处理的生长状况和产量结果好于碳铵处理,但这种差异随气温降低而逐渐收窄,而尿素、碳铵分别配施有机肥的产量差异较小。研究结果还表明,叶菜硝酸盐含量受品种、气温和施肥等方面的影响;施肥特别是配施有机肥具有培肥作用。
Yields of leafy vegetables tend to increase with temperature decreasing under high-intensity successive plantation in winter in Pearl River Delta Area. Under the condition of four successive plantations of leafy vegetables with the same amount of phosphorus and potassium, the experiment indicated that growth and yields of leafy vegetables in the urea treatment was better than those in ammonium bicarbonate treatment, but the difference declined with temperature decreasing. Little difference was obtained between treatments of urea and ammonium bicarbonate combined application with organic fertilizer respectively. The nitrate content of leafy vegetables was affected by the difference in variety, temperature and fertilization. Inorganic fertilizer combining application with organic fertilizer could improve soil fertility.
出处
《广东农业科学》
CAS
CSCD
北大核心
2009年第7期101-104,共4页
Guangdong Agricultural Sciences
基金
广东省科技计划项目(2004B20901004
2007A020300004-6)
关键词
叶菜
高强度连续种植
肥料
效应
leafy vegetables
high intensity successive plantation
fertilizers
effect
