马铃薯干物质积累及氮、磷、钾元素的需肥规律研究  

Study on dry matter accumuliation and nitrogen,phosphorus, potassium nutrition characteristics of potato

作　　者：张荣[1] 

机构地区：[1]青海省农林科学院土肥所,青海西宁810016

出　　处：《广东农业科学》2012年第17期55-56,59,共3页Guangdong Agricultural Sciences

基　　金："十一五"国家科技支撑计划项目(2008BADA4B09)

摘　　要：在青海省旱地对马铃薯需肥特性进行研究,结果表明:在马铃薯生育期中干物质累积量随植株生长发育呈快速增长趋势,成熟期到高峰的干物质积累量为6 228.00 kg/hm2。每生产1 000 kg马铃薯块茎吸收氮13.57 kg、磷2.24 kg、钾9.11 kg,氮、磷、钾比为1∶0.20∶0.68;马铃薯整个生育期氮的积累分配中心为叶片,生长前期的钾和磷元素分配规律与氮素相同,而成熟期钾和磷的分配积累中心转移为块茎。The characteristics of fertilizer requirement of potato in arid land of Qinghai province were studied.The results showed that the dry matter accumulation showed a rapid growth trend in the growth period of potato plants.The growth peak was 6 228.00 kg/hm2 in maturity period.To get 1 000 kg tuber,potato need to absorb nitrogen 13.57 kg,phosphorus 2.24 kg,potassium 9.11 kg,the rate among which was 1∶0.20∶0.68.The distribution centers were the blades of nitrogen in potato growth period.It was the same that the distribution centers were baldes of potassium and phosphoric in prophase,but maturity distribution centre was the tuber.

关 键 词：马铃薯 氮磷钾元素 干物质 需肥规律 

分 类 号：S532[农业科学—作物学]