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作者	单位
李娟，韩霁昌，李晓明	(1.陕西省地产开发服务总公司，陕西西安 710075； 2.西北农林科技大学林学院，陕西杨凌 712100； 3.陕西省土地整治工程技术研究中心，陕西西安 710075； 4.国土资源部退化及未利用土地整治工程重点实验室，陕西西安 710075）

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中文摘要:

为检验砒砂岩与沙混合复配成土的效果，于2010-2012年在陕西富平比较了砒砂岩与沙1∶1(C1)、1∶2(C2)和1∶5(C3)及黄土与沙1∶2(CK)4种混合成土模式下冬小麦光合生理和产量的差异。结果表明，C2处理在0~60 cm土层2年的平均贮水量较CK、C1和C3处理分别高20.18%、12.79%和3.98%。砒砂岩与沙复配成土不影响小麦旗叶净光合速率、蒸腾速率、气孔导度及SPAD值随生育进程的变化趋势，但在小麦生育期内，C1、C2处理2年的平均净光合速率、蒸腾速率和气孔导度较CK分别增加8.04%、6.43%、7.96%和12.97%、13.32%、15.46%，处理之间差异显著(P<0.05)；SPAD值以C2处理最高。各处理间干物质积累量差异显著，C1、C2、C3处理2年平均干物质积累量较CK分别高16.19%、24.36%和10.29%。两年平均产量以C2处理最高，达到6 140.25 kg·hm^-2，较C1、C3和CK分别增产3.56%、13.33%和19.62%。综合考虑来看，砒砂岩与沙复配成土以1∶2效果最佳。

英文摘要:

In order to discover the effect of remixed soil with soft rock and sand on photosynthetic physiology and yield of winter wheat, an experiment was conducted to measured and analyzed photosynthetic capacity and yield of wheat growing on the remixed soil with different soft rock and sand mixing ratios of 1∶1(C1)，1∶2(C2) and 1∶5(C3), and control soil mixed with the ratio of loess to sand of 1∶2(CK) in Fuping county of Shaanxi province in 2010 and 2012. The results showed in 0~60 cm soil layer, the average soil water storage of tow years in C2 increased 20.18%, 12.79% and 3.98% compared with CK, C1 and C3, respectively. The remixed soil with soft rock and sand did not affect the change trends of P_n, T_r and G_s and SPAD of flag leaf in wheat growth process. Compared with CK, the average values of P_n, T_r and G_s under C1 and C2 significantly increased 8.04%, 6.43%, 7.96% and 12.97%, 13.32%, 15.46%, respectively. The SPAD value of C2 was the highest in all the 4 treatments. Dry accumulation was significantly different among the treatments (P<0.05). Compared with CK, the average dry accumulations under C1, C2, and C3 increased 16.19%, 24.36% and10.29%, respectively. The wheat average yield in C2 treatment was higher than the other treatments, and was 6140.25 kg·hm^-2. In total, C2 treatment was most suitable of wheat growth.

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