The WEAI of 6 main crops could be put in order as: millet > potato > panic > flax > pea > spring wheat.

• 旱地6种主要作物的水分生态适应性指数排序依次为：谷子＞马铃薯＞糜子＞胡麻＞豌豆＞春小麦。