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1995～1998年在山西省平定县理家庄村果园进行了生草覆盖试验。试验结果表明 ,在石灰岩发育的土壤上种植鸭茅和无芒雀麦 ,能明显提高叶片生理活性 ,使新梢不同部位叶片百叶重增加4.75 %～33.9 %,单叶面积增加16.26 %～29.6 %,叶绿素含量增加7.07 %～20.37 %,光合速率提高13.07 %～27.26 %,暗呼吸速率提高2.76 %～17.53 %;不同枝类叶片百叶重增加4.60 %～13.24 %,单叶面积增加2.72 %～12.54 %,叶绿素含量增加6.49 %～18.63 %,光合速度提高13.82 %～40.24 %,暗呼吸速率提高2.23 %～25.00 %;花序坐果率提高5.45 %和3.33 %,单果重增加4.9 %和1.5 %,单株产量提高58.68 %和53.5 %
1995 to 1998 in Pingding County, Shanxi Province Lijia Zhuang Village Orchard grass coverage test. The results showed that the planting of Dactylis glomerata and Bromus inermis could significantly increase the physiological activity of leaves, increased the leaf weight of leaves in different parts of shoots by 4.75% -33.9% and increased the single leaf area by 16.26% -29.6% , Chlorophyll content increased by 7.07% ~ 20.37%, photosynthetic rate increased by 13.07% ~ 27.26%, dark respiration rate increased by 2.76% ~ 17.53%, leaf weight increased by 4.60% ~ 13.24% and leaf area increased by 2.72% ~ 12.54 %, Chlorophyll content increased by 6.49% -18.63%, photosynthetic rate increased by 13.82% -40.24%, dark respiration rate increased by 2.23% -25.00%; inflorescence fruit rate increased by 5.45% and 3.33%, fruit weight increased by 4.9% and 1.5% Plant yield increased by 58.68% and 53.5%