提高谷子水分利用效率的研究

Study on the improvement of water use efficiency in foxtail millet

摘要: 采用不同品种、播种期、肥料、植物生长调节剂，实施地膜覆盖和综合栽培技术体系试验证明，品种基因型、播种期和施肥对谷子水分利用效率影响的作用较大，植物生长调节剂和地膜覆盖也有较好作用。提高谷子水分利用效率应以选用水分利用效率高的良种，适期播种，科学施肥和选用生长调节剂为中心集成的综合栽培技术体系。试验证明，防秕增粒高产栽培体系能提高水分利用效率26.5%～36.9%，分带种植高效栽培体系能提高水分利用效率33.3% ～49.3%。

Abstract: The results of experiments with different varieties,seeding dates,fertilizer application,plastic film mulching,plant growth regulators and comprehensive cultivative technique systems showed that genotype of varieties,seeding dates,plant growth regulators and plastic film mulching had higher effect on the water use efficiency(WUE) of millet.To improve WUE of millet is a comprehensive cultivation technique including selection of super-variety with high WUE,proper seeding,rational fertilization and application of plant growth regulators.The tests showed that WUE of millet was increased by 26.5% to 36.9% by measurement of reducing unfruitful seeds and increasing plump seeds.WUE was increased by 33.3% to 49.3% under alternate strip cropping system.