摘要
为了探讨水肥耦合作用下,不同比例的不同草炭对植物生长的影响。以小白菜为供试植物,通过4个灌水水平和施肥与不施肥两个肥分水平处理,采用了石河子草炭与加拿大草炭不同添加量处理在温室里进行盆栽试验,试验结果表明:施肥与不施肥对小白菜根系发育没有明显影响,而草炭的添加有利于其根系的发育和叶绿素的增加。在50%(对照饱和田间持水量为100%)灌水水平下,草炭对小白菜的生长反而起抑制作用,降低了其地上部鲜重,随着灌水量的增加,草炭的整体优势得以发挥,当灌水量达到100%时、125%时,草炭保水的优势发挥了,8%石河子和5%加拿大草炭混合处理的明显优于对照,地上部鲜重达到了对照4倍多。因此,8%石河子和5%加拿大草炭在100%灌水条件下是比较理想的处理方案,有利于小白菜的生长发育。
The addition of different ratio of peat to the soil affecting on the growth of plant under the coupling of water and fertilizer was discussed. The cabbage was taken in this experiment, and four water levels and two fertilizer were designed. The different addition of Shihezi peat and Canada peat affected on the growth of the cabbage in pot experiment in the greenhouse. The results show that fertilizer and no fertilizer had not remarkable effect on root, but the addition of peat made for root Under the fifty percent of water level （the saturation water content of the control take as reference）, the growth of c hibited by peat, the aerial plant fresh weight was decreased, but with the addition of water, the advantage of peat was worked. When the water level reach hundred percent and one hundred and twenty-five percent, the advantage of keeping water is done, the treatment by eight percent Shihezi peat and five percent Canada peat were better than the control, their aerial plant fresh weight was four times of the control＇s. From the results of this experiment, the conclusion was that eight percent Shihezi peat and five percent Canada peat were the better treatments for the of cabbage under the one hundred percent water irrigation.
出处
《中国农学通报》
CSCD
2007年第3期478-482,共5页
Chinese Agricultural Science Bulletin
基金
湖南省教育厅项目"基于GIS的城郊菜地土壤质量调控"(06C193)
关键词
草炭
耦合效应
小白菜
叶绿素
生物量
Peat, Coupling effect, Cabbage, Chlorophyll, Biomass
