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2001～2003年利用农田开放式空气CO2浓度增高(FACE)系统平台,研究FACE对武香粳14号不同生育时期磷素含量、吸收、分配及其效率的影响。结果表明:1FACE处理使水稻不同生育时期植株磷素含量增加,增幅为2.48%～18.84%;2FACE处理使水稻不同生育时期磷素积累量显著或极显著增加,增幅为28.74%～59.11%,生育前期的增幅明显大于生育中、后期;3FACE处理对水稻抽穗前磷素在叶片、茎鞘中的分配比例无显著影响,但使抽穗后磷素在稻穗中的分配比例明显减少,在叶片和茎鞘中的分配比例明显增加;4FACE处理使水稻不同生育时期磷素物质生产效率增加,增幅为2.53%～16.58%;5FACE处理使水稻磷素籽粒生产效率和收获指数下降,降幅分别为6.53%～15.51%和1.48%～9.04%。
From 2001 to 2003, the effect of FACE on phosphorus content, absorption, distribution and its efficiency in different growth stages of Wuxiangjing 14 was studied by using FACE system. The results showed that: 1FACE treatment increased the phosphorus content of rice plants at different growth stages from 2.48% to 18.84%; 2FACE treatment significantly or significantly increased the accumulation of phosphorus in different growth stages of rice, with an increase of 28.74% -59.11% The increase in the early stage was significantly greater than that in the middle stage and the late stage. The 3FACE treatment had no significant effect on the distribution of phosphorus in the leaves and stems and sheaths before heading, but decreased the proportion of phosphorus in the panicles after heading. 4FACE treatment increased the phosphorus production efficiency of rice at different growth stages by 2.53% -16.58%, while that of 5FACE treatment decreased the production efficiency and harvest index of phosphorus phosphorus by 6.53% ~ 15.51% and 1.48% ~ 9.04%.