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以￣３Ｈ＿２Ｏ为示踪剂，用同位素示踪法对非充分灌溉的７大类作物耐旱性进行了试验研究，经６３个品种的５００余个样品的￣３Ｈ＿２Ｏ测定结果表明：在土壤含水量为凋萎系数以下的极度干旱状况下，作物处于萎蔫失水耐受时间时，给作物灌溉￣３Ｈ＿２Ｏ且复水时间为１．５ｈ，作物吸氘水量随此时间增值大的，其耐旱性强。同时发现，吸￣３Ｈ＿２Ｏ的量─—作物抗萎蔫能力与作物耐旱性成正比。将￣３Ｈ＿２Ｏ法与耐旱性盆栽鉴定法比较结果表明，氘水示踪失水作物抗萎蔫恢复能力是一种判别作物耐旱性的有效方法。
To 3H_2O as a tracer, isotope tracing method of non-sufficient irrigation of seven major crops drought-tolerant studies carried out by 63 varieties of more than 500 samples ~ 3H_2O determination results show that: the soil moisture content Under extreme drought conditions below the wilting coefficient, when the crop is wilting and losing water tolerant time, the crop irrigation ~ 3H2O and the rehydration time is 1.5h, and the amount of deuterium absorbed by crops increases with the increase of time, and its drought tolerance Strong. At the same time, it was found that the amount of 3H2O ~ ─ the ability of crop wilt resistance and drought resistance is proportional to the crop. Comparing the results of the 3H-O 2 method and the drought-tolerant pot experiment, the results showed that the ability of deuterium-water tracing water-losing crops to restore wilting resistance was an effective method to distinguish the drought tolerance of crops.