不同滴灌量对油莎豆干物质积累的影响

Effects of Different Irrigation Volume on Dry Matter Accumulation of Cyperus esculentus

为对新疆地区油莎豆的滴灌栽培提供依据,进行不同滴灌量(150m3/667m2,200m3/667m2,250m3/667m2、300m3/667m2,350m3/667m2)的田间滴灌试验,研究其对油莎豆不同生长发育时期器官干物质积累和分配影响。结果表明:在整个生育期内,不同滴灌处理油莎豆各个器官干物质总重随生育期的推进呈持续增加的趋势;在不同生育期内叶片的干重大于茎,叶片干重较大的滴灌处理其产量也相应较高;不同滴灌处理叶片干重在结豆初期均达峰值。滴灌量为250m3/667m2的处理油莎豆产量最高,水分利用效率也最高,在块茎初期叶面积指数和叶的干物质质量达显著水平,该处理既提高了油莎豆的产量,又节约了水资源。

To provide references for drip irrigation of C.esculentus in Xinjiang,a field irrigation experiment was conducted to explore the effects of different irrigation volume（150 m3/667m2,200m3/667m2,250 m3/667m2,300 m3/667m2 and 350 m3/667m2）on dry matter accumulation and distribution of C.esculentus in different organs in different growth period. Results：Dry matter accumulation of different treatments in various organs of C.esculentus gradually increased throughout the growing period.The dry weight of leaves was always greater than that of stem,and the heavier the dry weight of leaves the higher would be the output of C.esculentus.Under the different drip irrigation volume,the dry leaves weight reached the peak at early stage of yield fruiting.The yield and water use efficiency reached the peak with the drip irrigation volume of 250m3/667m2.And the leaf area index and the leaves dry weight presented a significant level at early stage of yield fruiting.Drip irrigation might not only improve the yield of C.esculentus,but also save the water resource.