肥料袋控缓释对草莓N素利用率及其产量的影响

以鬼怒甘草莓为试材,应用同位素15N示踪技术,研究肥料袋控缓释对设施促成栽培草莓氮素利用率及其产量的影响。结果表明:盆栽条件下,肥料袋控缓释处理比同剂量散施处理氮素利用率提高1倍以上,肥料回收率增加1.7倍,产量约增加0.5倍;在田间条件下,袋控缓释处理比同剂量分2次(定植与开花前)施用,总产量提高12%左右,但前期产量约下降10%。

Effect of fertilizer being bag-controlled released on nitrogen utilization rate and yield in strawberry

The rate of utilization of nitrogen and yield in strawberry grown with bag-controlled released fertilizer were studied. Kinuama strawberry cultivar was used as material, and carried out with the 15N isotope trace technique under greenhouse cultural conditions. Results indicated that compared with the same amount of disperse application the rate of utilization of nitrogen was increased more than one time, and the rate of recovery increased more than 1.2 times and the yield increased about 0.5 times. Under field conditions, fertilizer being bag-controlled released treatment could increase the total yield by around 12% compared with the same amount of disperse application in two times (before planting and before flowering), but in the period of prophase the yield was decreased by around 10%.