建薯1号马铃薯生育期适宜土壤水分指标研究

目的]探讨辽西建平地区马铃薯生育期适宜土壤水分指标,为马铃薯生产科学用水提供理论依据。方法]采用模拟自然降水方法,控制土壤含水率在60%~75%、65%~80%、70%~85%,试验小区随机排列,设3个处理,每个处理3次重复,对马铃薯生育期土壤水分、生长状况及产量品质进行对比观测。结果]马铃薯不同生育期需水量明显不同;苗期约占全生育期的10%~15%;薯块形成期约占23%~28%;薯块增长期约占45%~50%,是全生育期需水量最多的阶段;薯块淀粉积累期则不需要过多的水分,该期耗水量约占全生育期的10%为最佳。结论]辽西地区马铃薯生长发育期适宜土壤水分指标为,苗期65%,块茎形成期75%,块茎增长期80%,淀粉积累期65%,在各生育期适宜的土壤水分条件下,马铃薯全生育期耗水量约为379.7 mm时,马铃薯才能达到品质优、产量高。

Potato Suitable Maturity Indicator of Soil Moisture Jianshu 1

Objective] To investigate the soil moisture index suitable for potato production to provide theoretical basis for the scientific use of water.Method]A total of nine plots were devided into three treatments,namly,treatment 1,2 and 3,keeping soil moisture content at 60%-75%,65%-80% and 70%-85%,respectively.The soil moisture,growth,yield and quality were observed.Result]The water requirement of potato at different growth stages was significantly different: seedling growth period 10%-15%,tuber formation peri...