草莓体内氮磷钾分配动态研究

对草莓“宝交早生”各器官氮磷钾含量和分配进行了研究。结果表明：植株在开花结果前期氮磷钾含量均维持较高水平，４月２５日（开花期）后氮磷钾含量开始降低；植株磷含量５月１３日前，维持低磷不水平，以后呈缺乏状态。氮在各器官含量由高到低依次为叶片、果实、茎和根，根和茎氮含量一直呈降低趋势，叶片和果实氮含量变化趋势相似；５月１３日（结果期）后，果实中氮和降低。磷在各器官含量由高低到依次为果实、叶片、茎和根，各

The Studies on Content Distributions of Nitriogen, Phosphorus and Potossium in Strawberries

The content and distribution of N, P and K in strawberry organs were analysed in this experiment. The results showed that: The contents of N, P and K of the plants were maintained in high level at the early developing stage and began to decline after April 25. While the content of P was in low level before May 13 and then in the condition of deficiency. The content of N in leaves was higher than that in fruits, in turn, than that in stems and roots. The contents of N in stems and roots declined during the whole period but with a sharp drop in fruits after May 13. The content of P was low in all organ but was higher in fruits than in leaves, in turn, than that in roots and stems. The content of P declined in all organ during the season but with a sharp drop in leaves after May 13 indicating P deficiency in the plants. The content of K was higher in fruits than in leaves, in turn, than that in stems and roots. The amount of K in fruits was maintained in high level from April 10 to May 13. and then droped sharply. The K contents in stems leaves and roots began to decline after April 25. It can be eoncluded that balanced fertilazation should be emphasized in strawberry production, especially the P and K fertilazation during flowering fruiting season.