滴灌条件下不同灌水量对苏丹草种子产量的影响

Different Irrigation on Sudan Grass Seed Production under Drip Irrigation

[目的]灌溉对于苏丹草种子生产有着重要的意义,采用滴灌技术对苏丹草进行灌溉,研究灌水量对苏丹草种子产量的影响,确定需水规律及在该地区适宜的提高种子产量的栽培方式.[方法]以新苏2号苏丹草为研究对象,采用滴灌系统灌溉,精量调控灌水量.[结果]灌水量越大时,每株的穗数越多,每个穗上的穗粒数越多,千粒重越大,这将直接影响种子产量的增加.通过方差分析,得知土壤相对含水量为70％～75％时的产量显著高于其他处理(P＜0.01).[结论]在一定程度上说明苏丹草的种子生产中对水敏感,土壤相对含水量为70％～75％时种子产量最高.

【Objective and Method】Irrigation for Sudan grass seed production has an important significance,use drip irrigation for sudangrass in this study.The aim of the text was mainly to research the impact of irrigation amount on Sudan grass seed production,to determine the water requirement rules and appropriate to improve seed yield cultivation methods in the area.Experimental study of object is Sudan grass,irrigation by drip irrigation system,precise regulation of irrigation amount.【Result 】The larger irrigation amount,the more panicles per plant would produces,the more grains per spike on each spike,the greater grain weight,which will directly affect the increase in seed yield.By analysis of variance,it was known that when soil relative water content reached 70% to 75%,the yield was significantly higher than that of other treatments(P < 0.01).【Conclusion】Sudan grass is sensitive to a certain extent in the water and fertilizer,and high yield could be obtained when the water and fertilizer were sufficient.