三种苗木在不同供水条件下生理适应性及耗水特性研究

选用君迁子、臭椿、白榆三个树种苗木，在盆栽条件下，控制三种土壤含水量，研究其适应性和耗水特性。结果表明，白榆适应能力最强，其次为臭椿，而君迁子最弱，在耗水量上基本接近，但耗水系数差异明显，主要是由于三个树种在不同水分条件下物质累积量不同。

STUDY ON ADAPTABILITY AND WATER CONSUMPTION PROPERTIES OF THREE SPECIES OF NURSERY STOCKS IN DIFFERENT WATER CONDITION

We chose three species of nursery stocks.In pot experments under manual soil water content,study on their adaptability and water consumption properties.The results show that:Ulmus pumila L.is the best adaptability in three trees.Ailanthus altissima is more Diospyros lotus L.is worse,amount of water consumption is similar,but water consumption coefficient is clearly different,the reason is that the biomass of three trees is clearly different in three water levels.