硅氮磷颗粒肥对水稻吸收NP的影响

EFFECT OF SILICON NITROGEN SUPERPHOSPHATE GRANULATED FERTILIZER ON N AND P ASSIMILATION IN RICE

利用^(15)N、^(32)P示踪研究硅氮磷颗粒肥对水稻吸收利用NP影响结果表明,硅氮磷颗粒肥对促进水稻生长发育、增蘖、增穗有明显作用。插秧时施用,稻谷平均增产18.4％。水稻植株体内积累总N量比不施硅氮磷颗粒肥的高11.45％,全磷高12.1％。水稻植株对肥料N、P利用率分别提高7.7％和3.4％。

15N and 32P were used to investigate the effect of silicon nitrogen superphosphate granulated fertilizer on N and P assimilation of rice.The results showed that the silicon nitrogen superphosphate granulated fertilizer had positive effects on growth,increase of tiller and ear in rice.Application of the fertilizer at transplanting period increased 18.4% of rice yield.The total N and P accumulated in plant reached 11.45% and 12.10% respectively.The utilization rates of N and P with applying silicon nitrogen superphosphate granulated fertilizer at the stage of transplanting shoots were 7.7% and 3.4% higher respectively than those without applying the fertilizer.