Abstract: [Objective] Alfalfa as the main crops cultivated in the pastoral areas of Xinjiang, due to drought, high evapotranspiration and other special natural conditions, many problems such as excessive irrigation quota and high consumption and low efficiency resulted in it.Based on the drip irrigation technology, through the magnetic treatment on the magnetization under the growth and yield of alfalfa, this project aims to clarify the law of alfalfa growth under the condition of magnetization and provide data support for high quality and high yield of alfalfa and reasonable irrigation system.[Method]Setting 1,000 GS, 3,000 GS and 5,000 GS of three different magnetization, irrigation quota of 3,600 m3/hm2, and irrigation quota of 300 m3/hm2, the growth index and yield index of alfalfa under different magnetic intensities were monitored and the changes of plant growth and yield index were analyzed, thus understanding the effect of magnetization treatment on alfalfa growth.[Result]The results show ed that magnetized water irrigation promoted the growth and yield of alfalfa, compared to the first and second stubble, the average height of magnetized water treatment were 3.4 cm and 7.4 cm higher than, the average stem diameter of the control group.The average stem diameter was 0.17 mm and 0.25 mm higher than that of the control and the average yield compared with the control group was more than 0.23 kg/m2 and 0.14 kg/m2.The correlation between yield and plant height and stem diameter was linear (R=0.96), and the fitting equation was Y=-0.883,4+0.017,7 X1+0.137,4 X2.[Conclusion]In the alfalfa first year growth period, magnetized water irrigation can promote the growth and yield of alfalfa, but with the magnetization increase, yield would decrease, and the alfalfa is a perennial crop, reasonable selection of magnetization still needs to be further researched in selecting reasonable magnetization intensity in the future.

摘要： [目的]苜蓿作为新疆农牧地区的主要种植饲草作物之一,受到干旱少雨、蒸散量大等特殊自然条件的限制,苜蓿在水分管理上存在着灌溉定额过大和高耗低效等问题.在滴灌灌水技术的基础上,通过磁化处理,对磁化处理下苜蓿生长态势和产量进行分析,研究磁化条件下苜蓿的生长变化规律,为苜蓿优质高产和制定合理的灌溉制度提供数据支撑.[方法]试验设1 000、3 000和5 000 gs三个不同磁化强度,滴灌灌溉定额为3 600 m3/hm2,灌水定额为300 m3/hm2.对不同磁化强度下苜蓿生长指标及产量指标进行监测,分析不同磁化强度处理的植株生长和产量指标的变化规律,了解磁化处理对苜蓿生长的影响特征.[结果]磁化水灌溉可以促进苜蓿植株生长和提高产量,第一茬与第二茬相比,磁化水处理平均株高与对照相比分别高出3.4和7.4 cm,平均茎粗与对照相比高出0.17和0.25 mm,平均产量与对照相比高出0.23和0.14 kg/m2.产量与株高和茎粗呈线性相关关系(R=0.96),拟合方程为Y=-0.883 4+0.017 7 X1+0.137 4 X2.[结论]在苜蓿的一年生长周期内,磁化水灌溉可以促进苜蓿植株生长和提高产量,但随着磁化强度的增加产量却降低.