磷肥不同用量对蓖麻光合作用和产量的影响

No fertilization; Soil aggregate; Humin; Content; Optical property

采用田间小区试验,研究了不同施磷量(P2O5:0 kg/hm2、45 kg/hm2、90 kg/hm2、135 kg/hm2)对蓖麻光合作用和产量的影响。结果表明,施磷可显著提高蓖麻的光合作用及产量,施磷肥45 kg/hm2效果最好,产量最高,比对照增产32.34%。

In this study, the effects of different amount of phosphorus fertilizer （PzOs： 0kg/ha, 45 kg/ha, 90 kg/ha and 135 kg/ha） on photosynthesis and yield of castor （Ricinus communus L.） were studied. The resuits showed that photosynthesis and yield of castor increased with the increase of the amount of phosphorus fertilizer. When the amount of phosphorus fertilizer was about P205 45 kg/ha the yield of castor was highest and 32.34% higher than CK.