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人工设置瘠薄地块，对高粱进行耐瘠性鉴定，应用耐瘠指数和出苗至开花延迟天数两个分级指标，结合田间目测评级，对养分胁迫下高粱受害程度、产量降低水平和植株死亡等与对照区品种比较，划分品种的抗性等级，从高粱种质资源中筛选出一级耐瘠品种77份。
Artificial barren plots were set up to identify barrenness of sorghum. Two grading indices of barrenness index and emergence delay to flowering days were used in combination with field grading to evaluate the degree of damage to sorghum, the reduced yield and plant death under nutrient stress Comparison of the control area varieties, the classification of resistance levels of varieties, sorghum germplasm resources from screening out of a barren variety 77.