分期播种对春菠菜生长发育的影响

Effect of sowing dates on the growth and development of spinach in spring

为了确定菠菜品种在春季栽培中的适应性,并探讨环境条件对菠菜抽薹开花的影响,分别在2月17日和4月10日播种4个菠菜品种,观察测定其抽薹日期和抽薹时的生长参数,结果表明:4个品种抽薹时都能有较多的叶数和较重的单株鲜重,都适合在这2个播期使用。‘尚品’在高温下的产量降低幅度最小,实际产量也最高,是一个更适合在4月10日播种的品种。

In order to investigate the effect of environmental factors on the bolting of spinach(Spinacia oleracea L.)and select suitable cultivars for spring cultivation,4 spinach cultivars(Yangchun,Shangpin,Bote,and Yuanbao)were sowed on Feb.17 and April 10.Bolting date were recorded for each cultivar and growth parameters were determined on the bolting day.The results showed that all of the 4 cultivars had many leaves and plant fresh weight for harvest and were very suitable for the two sowing date.Under high temperature condition,Shangpin had lower decrease of fresh weight and higher productivity than the other 3 cultivars.So Shangpin is a much more suitable cultivar to be sowed on April 10.