【摘要】 研究了太行山干旱低山丘陵区苹果-紫花苜蓿复合系统对苹果树体生长、叶片质量、光合速率、单株产量和品质及土壤养分含量的影响.6a的研究结果表明,每侧保留1m清耕保护带的处理(T3)与对照相比可以提高苹果百叶重13g,比叶重0 082g·dm-2,叶绿素含量0 70g·kg-1,叶片平均光合速率1 79μmol·m-2·s-1;苹果单株产量增加3 08kg·株-1,平均单果重增加15 25g,硬度增加1 55kg·cm-2,可溶性固形物增加1 35g·kg-1、不留保护带的全园间作处理苹果树体生长、单株产量和平均单果重均有下降;复合系统中0～40cm土壤有机质、全N,NH4+-N都高于对照.说明实行苹果紫花苜蓿复合系统至少应保留1m的清耕保护带.更多还原

【Abstract】 A 6-year continuous experiment on effects of apple-alfalfa system on soil nutrient content, growth, fruit yield and quality of apple tree was conducted in the drought hilly region of Taihang Mountain. The results showed that, pre area could get the fresh weight of 100 leaves of apple increased by 13.00 g,SLW by 0.082　g·dm^-2,content of chlorophyll by 0.70 g·kg^-1 and the average net photosynthetic rate by 1.79 μmol·m^-2·s^-1,and the average yield per tree, average fruit weight, firmness and soluble solid substance of apple were increased by 3.08 kg per tree,15.25　g, 1.55　kg·cm^-2　and 1.35　g·kg^-1 respectively. The treatment without soil clean protection belt got the growth, average yield per tree, average fruit weight decreased. the organic matter, total N,and NH₄⁺-N in 0～40　cm soil in apple-alfalfa system were higher those in the CK. This indicated that 1m soil clean protection belt on each side should be kept between the apple tree rows in apple-alfalfa system.更多还原