土壤含水量对湿栽水芹冬春季产量和品质的影响

摘要

为探索湿栽水芹（Oenanthe stolonifera DC．）生长适宜的最低土壤含水量，设置了土壤相对含水量为90％—100％、80％—90％、70％—80％、60％—70％四个不同土壤含水量梯度，比较了其对冬春季湿栽水芹新品系 D07和 G0601产量、品质的影响。结果表明：D07在土壤相对含水量为80％—90％时产量最高而 G0601则在90％以上时最高，灌水量分别为669．30 m3？hm2和795．60 m3？hm2，产品粗纤维含量在田间持水量80％以上时均较低。由此认为，湿栽水芹可以进一步降低灌水量且品系间有差异。土壤相对含水量为80％是适宜品系 D07生长的最低土壤含水量下限；土壤相对含水量为90％是适宜品系 G0601生长的最低土壤含水量下限。%In order to explore the lowest soil water content suitable for wet-cultivated water dropwort(Oe-nanthe stolonifera DC.)to grow,wet cultivation of 2 new water dropwort lines D07 and G0601 was carried out in winter and spring at 4 different soil relative water contents:90%—100%,80%—90%,70%—80% and 60%—70%.The results showed that the D07 line’s yield was the highest at soil relative water content of 80%—90%while the G0601 line’s reached the highest when soil relative water content was above 90%,with their irrigation water amounts being respectively 669.30 m3 ?hm2 and 795.60 m3 ?hm2;and both products’crude fiber contents were lower when soil relative water content was above 80%.Thus it was concluded that the irrigation water a-mount in wet cultivation of water dropwort could be further reduced and there was a difference between the two lines.The soil relative water content of 80% was the lowest limit suitable for growth of the D07 line,and the soil relative water content of 90% was the lowest limit suitable for growth of the G0601 line.