高粱[Sarghum bicolor(L)Moench]是美国南部高原的主要作物之一。它既耐旱又对灌溉有高度效应,所以既适于旱地又适于灌溉条件。Salter 和 Goode 总结资料证明:由于缺水而减产的程度不仅取决于缺水的程度也取决于生长期。Lewis 等在高粱生长中的仅仅自营养生长后期至蜡熟期缺水,土壤水势降至—12～—13巴(其余生长季节保持在—0.7巴 Sorghum [Sarghum bicolor (L) Moench] is one of the major crops on the southern plateau of the United States. It is both drought-tolerant and highly effective for irrigation and is therefore suitable both for drylands and for irrigation. Salter and Goode conclude that the extent to which production is reduced due to lack of water depends not only on the extent of water scarcity but also on the growing season. Lewis and other sorghum only in the growth of self-nutrition to the wax maturity of the water shortage, the soil water potential dropped to -12 ~ -13 bar (the rest of the growing season maintained at -0.7 bar