不同水分处理条件对油莎豆叶片生理指标及块茎品质的影响

Effects of Different Moisture on Leaf Physiological Regulation Substances Content and Quality of Cyperus esculentus L.

为了解不同水分对小粒油莎豆生理调节物质含量及品质的影响,本试验于2014年在石河子蔬菜研究所试验田开展。共设置150 m^3/667m^2(W1)、200 m^3/667m^2(W2)、250 m^3/667m^2(W3)、300 m^3/667m^2(W4)350 m^3/667m^2(W5)5个灌水处理。通过小区控制,测定了油莎豆叶片在封行期、块茎初期、块茎盛期、成熟期的叶绿素、超氧化物歧化酶(SOD)和过氧化物酶(POD),并于收获后测定了块茎的品质(粗蛋白、总糖、淀粉、粗脂肪)。结果表明,随着生育时间的推进,5种处理下油莎豆叶片的叶绿素含量、SOD和POD的含量都趋于先增加后降低的趋势;对收获后品质指标的测定发现,也表现出随灌水量的增加后降低的趋势。因此,在水资源匮乏的地区,250 m^3/667m^2可以满足油莎豆的正常生长需要。

In order to understand the plasticity effects of different moisture on physiological regulation substances content and the quality of C.esculentus,experiment was conducted in field trials in Shihezi Vegetable Research Institute in 2014. Five water treatments： 150 m^3/667m^2（ W1）,200 m^3/667m^2（ W2）,250 m^3/667m^2（ W3）,300 m^3/667m^2（ W4）,350 m^3/667m^2（ W5） were set. The contents of chlorophyll,the activities of superoxide dismutase（ SOD）,peroxidase（ POD） of crop closure stages,tuber initial stage,tuber growing season,mature date and the rough protein,total sugar,starch and crud fat were analyzed after harvest were determined. The results indicated that the content of chlorophyll,SOD and POD showed increasing trend first and decreasing afterwards with the increasing reproductive years in five water treatments; the quality also showed the increasing trend first and decreasing afterwards with the increasing irrigation requirement. These findings suggested that 250 m^3/667m^2 could meet the normal growth need of C. esculentus in arid region where water resource is deficient.