不同连作土壤处理对再植水蜜桃苗生长状况及光合特性的影响  

Effects of different continuous cropping soil treatments on growth status and photosynthetic characteristics of replanted honey peach seedlings

作　　者：刘涛[1] 沃林峰[1] 赵丽 杨丽娜[1] 房明华 毛文龙[1] 胡渊渊[3] LIU Tao;WO Linfeng;ZHAO Li;YANG Lina;FANG Minghua;MAO Wenlong;HU Yuanyuan(Hangzhou Raw Seed Growing Farm,Hangzhou 311115,Zhejiang,China;Hangzhou Plant Protection and Soil-Fertilizer Station,Hangzhou 310000,Zhejiang,China;Zhejiang A&F University,Lin’an 311300,Zhejiang,China)

机构地区：[1]杭州市原种场,浙江杭州311115 [2]杭州市植保土肥总站,浙江杭州310000 [3]浙江农林大学,浙江临安311300

出　　处：《经济林研究》2019年第1期173-180,共8页Non-wood Forest Research

基　　金：杭州市农业科研自主申报项目(20180432B39);浙江省产业科技创新团队项目(2009R50033-7)

摘　　要：为了比较分析不同连作土壤处理水蜜桃再植苗的生长状况及其对主要营养元素的吸收差异,以探讨连作土壤对再植桃苗生长的影响机制,设置了4个土壤处理即重茬土(T_1)、重茬土+生石灰(T_2)、重茬土+活性炭(T_3)、重茬土+微生物肥(T_4)进行试验,分别测定了再植桃苗的生物量、气体交换参数、光合色素含量、叶绿素荧光参数及各组织中N、P的含量。试验结果表明:T_1处理的再植桃苗生长缓慢,其生物量最低,T_2、T_3和T_4处理则均明显地促进了再植桃苗的生长,其中T_4处理的长势最佳;T_1处理的再植桃苗其生长受到抑制,其影响因素为叶片气孔关闭和光合色素合成受阻、P元素缺乏等非气孔因素;T_4处理可促进再植桃苗叶片光合色素的合成,能明显提高其净光合速率,使其光合机构分配到光化学反应中的光能明显增多,光能利用效率明显提高,各组织中的P含量明显增加。研究结果表明:连作条件下再植桃苗的生长受到明显抑制,但施入微生物肥能有效缓解连作土壤对再植桃苗生长的伤害。In order to compare and analyze differences of growth status of replanted honey peach seedlings and its absorption to main nutrient elements under different continuous cropping soil treatments,and research effects of continuous cropping soil on growth of replanted seedlings,biomass,gas exchange parameters,photosynthetic pigment contents,chlorophyll fluorescence parameters,and N and P contents in replanted seedlings were determined.There were four continuous cropping soil treatments,including continuous cropping soil(T1),continuous cropping soil and quick lime(T2),continuous cropping soil and active ash(T3),continuous cropping soil and microbial fertilizer(T4).The results showed that replanted seedlings slowly grew and had the lowest biomass in T1 treatment,growth of replanted seedlings was significantly promoted in T2,T3 and T4 treatments and was the best in T4 treatment.Growth of replanted seedlings was inhibited by stomatal closure and some non-stomatal factors,such as inhibition of photosynthetic pigment synthesis and lack of P element.T4 treatment could promote photosynthetic pigment synthesis in leaves of replanted seedlings and obviously enhance its net photosynthetic rate,so light energy used in photosynthesis was obviously increased,light energy utilization efficiency was obviously increased,and P content in each tissue was obviously increased.Under continuous cropping conditions,growth of replanted seedlings was obviously inhibited,but microbial fertilizer application could effectively relieve negative effect of continuous cropping soil on growth of replanted seedlings.

关 键 词：水蜜桃 连作土壤 再植苗 微生物肥 生石灰 

分 类 号：S662.1[农业科学—果树学] S606[农业科学—园艺学]