马铃薯需水量与灌溉制度试验研究

2007年5~9月在山西省临县湫水河灌溉试验站进行了马铃薯需水量和灌溉制度试验研究。结果表明,马铃薯的耗水规律为发芽期1.54~2.79 mm/d,幼苗期1.67~3.14 mm/d,块茎形成期2.84~5.59 mm/d,块茎增长期达到最大值4.77~5.91 mm/d,淀粉积累期降为3.49~4.89 mm/d。马铃薯耗水量与产量呈抛物线关系,为了取得高产和较高的水分利用率,全生育期的耗水量应在450~500 mm之间。在当地气候、土壤及栽培模式下,马铃薯的灌溉制度为全生育期灌水2次,灌水定额60~90 mm,灌溉定额115~175 mm。

Experimental Study on Water Requirements and Irrigation Schedule of Potato

During the stage from May to September in 2007,water requirements and irrigation schedule of potato were studied in Qiushui River's irrigation experiment station of Shanxi province's Linxian.The results show that consumptive water regularities of potato are that water consumption is between 1.54 mm/d and 2.79 mm/d in the period of germination,water consumption is between 1.67 mm/d and 3.14 mm/d in the Seedling stage,water consumption is between 2.84 mm/d and 5.59 mm/d in the period of tuber formation,the hi...