摘要
为了找出天津地区冬枣低产的原因,测定了不同产量冬枣园土壤全氮、全磷、全钾等含量和各个物候期土壤的有效氮、有效磷、有效钾的动态变化。结果显示:高、低产园土壤中有效氮、有效磷、有效钾含量在不同采样期的变化趋势相同(有效氮含量呈先上升后下降趋势;有效磷含量呈先下降后上升再下降的趋势;有效钾含量呈上升趋势),且高产园中3种元素含量普遍高于低产园;植株生长前期土壤有效氮含量较低,盛花期和果实成熟期的有效磷含量较低,果实发育期的有效钾含量较低;本研究还分析了各物候期中元素与产量的相关性,认为在天津冬枣园主要是补充氮和磷。补施氮肥的关键期是盛花期和果实发育期,补施磷肥应在初花期和果实彭大期。
In order to understand the reasons for the low yield of Ziziphus jujuba cv.Dongzao in Tianjin,the contents of total nitrogen,phosphorus,potassium and soil available nitrogen and available phosphorus in different phenological stages were determined.The results showed that the contents of available nitrogen,phosphorus and potassium between the high and low yield gardens were the same in changing trend(The available nitrogen content increased first and then decreased;the available phosphorus content decreased first,then increased and then decreased;the effective potassium content showed an upward trend.),and the content of each element in the high-yield garden was generally higher than that in the low-yield garden;the soil available nitrogen was lower in the early stage of plant growth,and the available phosphorus in the flowering stage and fruit ripening stage was lower,and the potassium was lower in the fruit development stage.The correlation was also analyzed between element and yield in each phenological period;it was concluded that nitrogen and phosphorus should be supplemented in Tianjin Dongzao Garden.The key period for replenishing nitrogen fertilizer is the flowering stage-fruit development period.The phosphate should be fertilized in the early flowering stage and the fruit stage.
作者
高忠浩
王葳
杨静慧
冯国华
王芝学
李冰
张超
GAO Zhong-hao;WANG Wei;YANG Jing-hui;FENG Guo-hua;WANG Zhi-xue;LI Bing;ZHANG Chao(College of Horticulture and Landscape,Tianjin Agricultural University,Tianjin 300384,China;Tianjin Municipal Highway Bureau,Tianjin 300374,China;Fruit Tree Research Institute of Tianjin Academy of Agricultural Science,Tianjin 300384,China;China Institute of Resources and Environment,Tianjin Academy of Agricultural Sciences,Tianjin 300384,China;Tianjin Shuofang Green Technology Development Co.,Ltd.,Tianjin 300384,China)
出处
《天津农学院学报》
CAS
2020年第2期23-27,共5页
Journal of Tianjin Agricultural University
基金
天津市科技特派员项目(17ZXBFNC00310,19JCTPJC58000)
天津市林果现代农业产业技术体系创新团队项目(ITTFPRS2018002)
天津市科技局项目(18JCTPJC68000,17ZXZYNC00070)
天津市科技计划项目(18ZXBFNC00370)
邯郸市科学技术研究与发展计划项目(1812106033)。
关键词
冬枣
土壤
营养诊断
施肥
物候期
Ziziphus jujuba cv.Dongzao
soil
nutritional diagnosis
fertilization
phenophase
