生物有机肥对调亏灌溉下冬小麦苗期生长的影响

采用盆栽试验 ,研究了在调亏灌溉条件下施用生物有机肥对小麦苗期地上部分和根系生长量、根系活力及养分吸收状况的影响 ,以及复水后对植株干物质重及根系活力的影响。结果表明 :水分是影响冬小麦苗期生长的主要因素 ;不同施肥处理对小麦产生不同的影响。在水分适宜条件下 ,施用生物有机肥和NPK肥对小麦干物质重及养分吸收量的影响差异不大 ,而小麦根系活力 ,施用生物有机肥的要比NPK肥处理的高 ;在水分中度、重度亏缺时 ,施用生物有机肥处理的小麦干物质重、养分吸收和根系活力均比NPK肥处理高。尤其复水后 ,施用生物有机肥处理的小麦各指标 ,较施用NPK肥效果好 ,表明施用生物有机肥能提高小麦苗期抗旱性。

Effect of Biological Organic Fertilizer on Seedling Growth of the Winter Wheat under the Regulated Deficit Irrigation

In pot experiment the effects of biological organic fertilizer on various organ biomass,yield of winter wheat,nutrient uptake by wheat and root activity under regulated deficit,and the effect of that on organ biomass,root activity after rewatering were studied.The result showed that the effect of water stress on winter wheat was the most.Different fertilizer treatments had a different impact on winter wheat.When the supply of water was good,it was no different between of the two fertilizers of organic fertilizer and NPK fertilizer in organ biomass and uptake by wheat. Using organic fertilizers, the wheat′s root activity was higher than using NPK. At the little supplies of water,the treatment of using organic fertilizers was better than of using NPK. After rewatering,the wheat using organic fertilizers was higher than that using NPK.So the organic fertilizers had good effect on drought resistance for winter wheats.