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本文研究了不同氮素供应水平 (0～840ppm) 对一年生盆栽婆枣植株N、P、K总量的影响。结果表明,基质N浓度在O～420ppm范围内,随基质N浓度的增加,植株总N量增加,但基质N浓度增至840ppm时,植株总N量减少。基质N浓度从0ppm增加到210ppm时,植株总P量和总K量随之增加,之后基质N浓度再增加,两者反而下降。随基质N浓度的增加,植株N、P、K总量与叶片N、P、K的变化不尽一致。
This paper studied the effects of different nitrogen supply levels (0 ~ 840ppm) on the total N, P, K contents of annual potted Zizyphus jujube. The results showed that the total N content increased with increasing N concentration in the range of 0-420 ppm. However, when the N concentration increased to 840 ppm, the total N content decreased. When the concentration of substrate N was increased from 0ppm to 210ppm, the total amount of P and total K in plant increased with the increase of substrate N, but both decreased. With the increase of substrate N concentration, the total amount of N, P and K in leaves varied with N, P and K in leaves.