摘要
为探寻宁夏干旱区马铃薯高产高效的模式,通过设置水、氮、磷、钾4个因素交互作用对膜下滴灌马铃薯的生长发育特性进行研究。结果表明:随着灌水量的增加,旱区马铃薯茎粗和干物质积累量越大,各生育时期马铃薯的茎粗和干物质积累量均为T9处理(灌水量1500 m^(3)/hm^(2)、施氮量240 kg/hm^(2)、施磷量150 kg/hm^(2)、施钾量30 kg/hm^(2))最大,累计最大量分别为22.60 mm和15.63 g/株。随着灌水量和施氮量的增加马铃薯产量逐渐增加,随着施磷量和施钾量的增加逐渐降低;随着灌水量和施氮量的增加水分利用效率先增加后降低,随着施磷量和施钾量的增加先降低后增加。T9处理马铃薯产量最大为30.21 t/hm^(2),与其他处理均存在显著差异,T8处理(灌水量1500 m^(3)/hm^(2)、施氮量180 kg/hm^(2)、施磷量90 kg/hm^(2)、施钾量150 kg/hm^(2))水分利用效率最高11.06 kg/m^(3),与T6、T5处理无显著差异,与其他处理均存在显著差异;因此,T8处理可作为干旱地区马铃薯高产高效水肥管理组合。
In order to explore the high-yield and high-efficiency model of potato in the arid area of Ningxia,the growth and development characteristics of potato under mulch drip irrigation were studied by setting the interaction of water,nitrogen,phosphorus,and potassium.The results showed that with the increase of irrigation amount,the potato stem thickness and dry matter accumulation in arid areas increased.T9 treatment(irrigation amount 1500 m^(3)/hm^(2),nitrogen application rate 240 kg/hm^(2),phosphorus application rate 150 kg/hm^(2),potassium application rate 30 kg/hm^(2))had the largest tem thickness and dry matter accumulation in each growth period.The cumulative maximum amounts were 22.60 mm and 15.63 g/plant,respectively.With the increase of irrigation and nitrogen application,potato yield gradually increased,but it gradually decreased with the increase of phosphorus and potassium application;with the increase of irrigation and nitrogen application,water use efficiency first increased and then decreased.While with the increase of phosphorus and potassium application amount,WUE first decreased and then increased.The maximum potato yield of T9 treatment was 30.21 t/hm^(2),which was significantly different from other treatments.T8 treatment had the highest water use efficiency of 11.06 kg/m^(3),which was not significantly different from T6 and T5 treatments(P>0.05).Therefore,T8 treatment(irrigation amount 1500 m^(3)/hm^(2),nitrogen application rate 180 kg/hm^(2),phosphorus application rate 90 kg/hm^(2),potassium application rate 150 kg/hm^(2))can be used as a high-yield and efficient water and fertilizer management combination for potato in arid areas.
作者
贾帅
郭媛姣
高洪香
李梦刚
JIA Shuai;GUO Yuan-jiao;GAO Hong-xiang;LI Meng-gang(Ningxia Vocational and Technical College(Ningxia Radio and Television University),Yinchuan 750021,China;Ningxia Hydrology and Water Resources Monitoring and Early Warning Center,Yinchuan 750002,China;Ningxia Water Resources&Hydropower Survey Design&Research Institute Co.Ltd.,Yinchuan 750004,China)
出处
《节水灌溉》
北大核心
2021年第4期23-27,共5页
Water Saving Irrigation
基金
宁夏职业技术学院科研发展基金项目(XJ201907)。
关键词
水氮磷钾耦合
高产高效水肥管理
生长发育
马铃薯
产量
水分利用效率
water NPK coupling
high-yield and efficient water and fertilizer management
growth and development
potato
yield
water use efficiency
