摘要
以三年生‘七月鲜’枣树为试材,设4个放线菌剂用量处理(CK不施放线菌剂;T1、T2、T3分别施用10、15、20 g·株;放线菌剂),采用田间试验和实验室分析相结合的方法,研究了不同用量放线菌剂对枣树光合日变化、光响应曲线、单株产量、单果质量、优果率以及枣果总糖、可滴定酸等的影响,以期探索放线菌剂在枣树上的应用效果,通过改善土壤微生态,促进新疆红枣提质增效。结果表明:在阿克苏地区与对照相比,T2和T3处理明显减轻了叶片的光合午休现象,显著提高叶片的最大净光合速率(40.95%和48.92%)、暗呼吸速率(26.63%和48.52%)及光饱和点(35.57%和43.42%);不同用量放线菌剂处理下,单株产量及单果质量均无显著变化;优果率仅在T3处理下有显著提高;此外枣果总糖含量均有所增加,可滴定酸含量则显著降低7.93%~18.27%,从而使糖酸比得到显著提高。在和田地区与CK相比,T2和T3处理的单株产量、优果率及单果质量分别显著提高25.95%和27.13%、47.40%和50.27%、21.77%和19.64%。放线菌剂可以促进枣树光合作用,具增产提质作用。在该试验条件下放线菌剂单株适宜用量为15 g或20 g。
Taking three-year-old ‘Qiyuexian’ jujube as test material, and four actinomycete dosage treatments were set(CK did not apply actinomycete;T1,T2 and T3 were applied with 10,15 g and 20 g per plant actinomycetes respectively),the effects of different doses of actinomycetes on the diurnal variation of photosynthesis, light response curve, yield per plant, fruit quality, excellent fruit rate, total sugar and titratable acid of jujube were studied by combining field experiment and laboratory analysis, in order to explore the application effect of actinomycetes on jujube, and promote the quality and efficiency of Xinjiang jujube by improving soil microecology.The results showed that compared with the control, T2 and T3 reduced the midday depression of photosynthesis, significantly increased the maximum net photosynthetic rate(40.95% and 48.92%),dark respiration rate(26.63% and 48.52%) and light saturation point(35.57% and 43.42%) of leaves in Aksu.There was no significant difference in yield and fruit quality under different dosage of actinomycete.The rate of excellent fruit increased significantly only under the treatment of T3.In addition, the titratable sugar content of jujube fruit increased, while the total acid content decreased by 7.93%-18.27%,which significantly increased the sugar acid ratio.In Hotan, compared with the control, the yield per plant, excellent fruit rate and single fruit weight of T2 and T3 were significantly increased by 25.95% and 27.13%,47.40% and 50.27%,21.77% and 19.64%,respectively.Actinomycete can promote the photosynthesis of jujubeand increase the yield and quality.The suitable dosage of actinomycete was 15 g or 20 g per plant.
作者
吕文秀
韩刚
LYU Wenxiu;HAN Gang(College of Forestry,Northwest Agriculture and Forestry University,Yangling,Shaanxi 712100)
出处
《北方园艺》
CAS
北大核心
2021年第23期38-44,共7页
Northern Horticulture
基金
国家重点研发计划资助项目(2019YFD1001605)
国家林业和草原局林业科学技术推广资助项目([2019]32号)
西北农林科技大学科技成果推广重点资助项目(XTG2018-35)。
关键词
放线菌
枣树
光合
产量
品质
actinomycete
jujube
photosynthesis
yield
quality
