红寺堡地区马铃薯干物质积累特点研究

Research of dry matter accumulation characteristics of potato in Hong Sibao Area

为了探究马铃薯不同生育时期、不同器官干物质积累特点,本试验采用田间试验与测试分析方法,在红寺堡灰家窑马铃薯基地设置2个马铃薯品种,在常规施肥条件下,按照不同生育时期测定马铃薯干物质累积量,研究了马铃薯干物质累积的特点,为马铃薯精准施肥提供理论依据.主要试验结果如下:在供试条件下,马铃薯干物质积累量从苗期至收获期表现出不断上升的趋势,呈现出"S"型变化趋势,其中幼苗期增长缓慢且其值最小,成熟期达到最大值,花期和淀粉积累期增长较快.干物质积累速度前期以叶片的积累速度最大,块茎形成后块茎积累速度最大,到收获期时马铃薯块茎所占比重最大,根所占比重最小.

In order to explore the characteristics of dry matter accumulation of different organs at different stages of potato,The field experiment was studied by field trial,test analysis to determine the dry matter accumulation,in different organs and different growth stages under the condition of the conventional fertilizer application in Huijiayao potato planting bases in Hong sibu,where two different kinds of potatoes were used,the potato was studied the characteristics of the dry matter accumulation,provide theoretical basis for precision fertilization potato.And the results showed that： The dry matter accumulation content of potato showed a increased trend which was a S-shape from the seedling stage to the harvest stage,and the lowest in the seedling time,the highest in the harvest stage,increased the fastest in flowering stage and the starch stage.The accumulation of dry matter accumulation rate prior to blade speed,tuber formation after tuber accumulation is the largest.To harvest potato tuber percentage,the largest percentage of root is minimal.