间作栽培对薰衣草和豆类作物生长发育及产量的影响OA

Based on two lavender spacing patterns(row and plant spacing:100 cm×70 cm,L1,120 cm×53.33 cm,L2)in the Ili River Valley of Xinjiang,the following treatments were established:lavender monocropping(L1,L2),faba bean monocropping(B1),soybean monocropping(B2),laven-der-faba bean intercropping(L1B1,L2B1),and lavender-soybean intercropping(L1B2,L2B2).The ag-ronomic and root traits of lavender,as well as the photosynthetic physiology,dry matter accumulation and yield traits of leguminous crops were compared and analyzed.The results showed that lavender-legume intercropping had no significant effect on the number of branches,crown width,plant clump width and root indicators of lavender(P>0.05).However,with the increase of lavender row spacing,the plant clump width,total root length and root surface area increased,indicating that the increase of row spacing was beneficial to the growth of intercropped lavender.Lavender-legume intercropping sig-nificantly increased the plant height and stem diameter of leguminous crops.Under L2B2 condition,the plant height of soybean at maturity increased by 6.80%compared with B2,and under the L2B1 treatment,the stem diameter of faba bean increased by 12.04%compared with B1(P>0.05),and the increase of row spacing significantly improved the photosynthetic performance of leguminous crops.Under L2B1 condition,the net photosynthetic rate and stomatal conductance of faba bean were signifi-cantly higher than those of B1 by 19.63%and 43.18%respectively(P<0.05).Under L2B2 condi-tion,the net photosynthetic rate and stomatal conductance of soybean were extremely significantly higher than those of B2 by 29.24%and 63.00%respectively(P<0.01).Under L2B1 condition,the dry mass of root,stems and leaves of faba bean at maturity were increased by 27.32%,36.99%and 8.12%compared with B1 respectively.In terms of yield components,lavender-legume intercropping significantly increased the 100-seed mass of legumes.Under L2B1 condition,the 100-seed mass of faba bean was significantly higher than that of B1 by 15.75%,and under L2B2 condition,the 100-seed mass of soybean was extremely significantly higher than that of B2 by 22.86%.However,the number of harvested plants decreased by 59%-67%,resulting in the yields of intercropped faba bean and soy-bean being 40%-50%of those of monocropping.Overall,lavender-legume intercropping is beneficial for lavender growth but has no significant effects on its agronomic traits.Intercropped legumes pro-duced approximately half the yield obtained under monocropping,and the yield of intercropped soy-bean was slightly higher than that of intercropped faba bean.