Early non-destructive identification method for nitrogen absorption capacity of tea tree

An identification method and nitrogen absorption technology, applied in the field of tea tree cultivation, can solve problems such as blanks

Active Publication Date: 2019-03-29
TEA RES INST CHINESE ACAD OF AGRI SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, the early non-destructive identification technology of tea tree nitrogen absorption capacity is still blank

Method used

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  • Early non-destructive identification method for nitrogen absorption capacity of tea tree

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Embodiment 1

[0022] 1) Selection of tea tree cuttings and cuttings in sand culture: Longjing 43 was selected as the control variety of high-nitrogen and high-efficiency tea trees, Wuniuzao was used as the control variety of low-nitrogen and high-efficiency tea trees, and Zhongcha 302 was a variety to be identified, and the tea trees were not picked for spring tea, to be identified The cultivar (Zhongcha 302) and the control cultivar (Longjing 43 and Wuniuzao) were kept in spikes respectively. At the beginning of March, after the branches of the tea tree became hard, the branches of the tea tree whose stems were still green were cut off, and then the Branches are cut into 2.5-3.5 cm long cuttings with one bud and one leaf. The sand used in sand culture is washed and fully dried, and then laid in the field (thickness 20 cm). Choose a rainy day and insert the cut cuttings into the sand. After the cuttings are completed, water them to maintain 80% of the field water capacity. Build a sunshad...

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Abstract

The invention provides an early non-destructive identification method for nitrogen absorption capacity of a tea tree, which belongs to the technical field of tea tree cultivation. The method comprisesthe steps of 1) tea tree cutting branch selection and cutting and root selection and pretreatment; 2) non-invasive micro-test root system fixing; 3) test solution selection; 4) non-invasive micro-test system correction; 5) root system surface NH4+ and NO3-ion flow rate determination; 6) tea tree nitrogen absorption capacity evaluation; and 7) cutting seedling replantation. According to the earlynon-destructive identification method for the nitrogen absorption capacity of the tea tree, the tea tree resource is subjected to sand culture cutting for a period of time, and then the tea seedling is rooted out; non-invasive micro-test of the nitrate and ammonium ion flow rate of the tea seedling root is carried out; and the nitrogen absorption capacity of the tea tree resource is evaluated.

Description

technical field [0001] The invention belongs to the technical field of tea tree cultivation, in particular to an early non-destructive identification method for the nitrogen absorption capacity of tea trees. Background technique [0002] Tea trees are harvested from fresh leaves, which require a large amount of nitrogen fertilizer. A large number of studies have shown that nitrogen fertilizer has a significant effect on increasing the yield of tea. However, using only fertilization to alleviate the problem of poor soil nutrients in tea gardens will not only increase the input cost of the tea industry and the potential environmental risks brought by fertilizers, but also does not meet the sustainable development requirements of the tea industry. Therefore, it is of great significance to breed nitrogen-efficient tea varieties. Tea trees are perennial economic crops, and it takes a long time to select and breed good varieties. In summary, the development of a rapid and effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N33/48A01G2/10
CPCA01G2/10G01N33/0098G01N33/48
Inventor 阮丽成浩王丽鸳韦康吴立赟苏静静
Owner TEA RES INST CHINESE ACAD OF AGRI SCI
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