Abstract
Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials,this paper studies the characteristics of organic ecological soilless cultivation substrate of cultivation 1 year,cultivation 2 years and cultivation 3 years and effect of substrate extract on seed germination and seedling growth.The results showed that the dry density,pore water,pH and EC values of cultivation 3 years substrate were increased very significantly compared with that of cultivation 1 year.While the total porosity and pore of cultivation 3 years substrate were decreased very significantly compared with cultivation 1 year.After treating cucumber seeds and seedlings with cultivation 3 years substrate extract,their germination rate,sprout potential,germination index and vigor index were decreased very significantly compared with that of the CK;and the vertical roots length,hypocotyl radicel length,lat-eral root number,epicotyls and hypocotyl width were also decreased very significantly compared with that of the CK.The seedling plant height,overground fresh weight and dry weight were decreased very significantly compared with that of the CK;while the fresh weight and dry weight of underground seedlings were increased very significantly compared with that of the CK.The leaf photosynthetic rate and water use efficiency of seedlings were decreased very significantly compared with that of the CK.The leaf stomatal conductance,intercellular CO2 concentration and transpiration rate of seedlings were increased very significantly compared with that of the CK.The seedling root-shoot ratio,G value,Chlorophyll a content,Chlorophyll b content,Chlorophyll(a+b)contents and Chlorophyll a/b value were decreased significantly compared with that of cultivation 1 year substrate extract treatment.Therefore,after 3 years'cultivation,the substrate characteristics and contents are not favorable for cucumber seed germination and seedling growth.
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Claims 12
Claim · model-written summary
Substrate extract from 3 years of cultivation decreased the germination rate, sprout potential and germination index of cucumber very significantly relative to the CK.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- cultivation 3 years substrate extracte2
- Outcome
- germination rate, sprout potential, germination indexe1
- Direction
- decreasede1
- Comparator
- CKe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e1“their germination rate, sprout potential, germination index and vigor index were decreased very significantly compared with that of the CK”
Claim · model-written summary
Substrate extract from 3 years of cultivation decreased the vigor index of cucumber very significantly relative to the CK.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cultivation 3 years substrate extracte2
- Outcome
- vigor indexe1
- Direction
- decreasede1
- Comparator
- CKe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e1“their germination rate, sprout potential, germination index and vigor index were decreased very significantly compared with that of the CK”
Claim · model-written summary
Substrate extract from 3 years of cultivation decreased seedling plant height, overground fresh weight and dry weight of cucumber very significantly relative to the CK.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cultivation 3 years substrate extracte2
- Outcome
- seedling plant height,overground fresh weight and dry weighte4
- Direction
- decreasede4
- Comparator
- CKe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e4“The seedling plant height,overground fresh weight and dry weight were decreased very significantly compared with that of the CK”
Claim · model-written summary
Substrate extract from 3 years of cultivation increased fresh and dry weight of underground seedling parts of cucumber very significantly relative to the CK.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cultivation 3 years substrate extracte2
- Outcome
- fresh weight and dry weight of underground seedlingse5
- Direction
- increasede5
- Comparator
- CKe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e5“while the fresh weight and dry weight of underground seedlings were increased very significantly compared with that of the CK”
Claim · model-written summary
Substrate extract from 3 years of cultivation decreased leaf photosynthetic rate and water use efficiency of cucumber seedlings very significantly relative to the CK.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cultivation 3 years substrate extracte2
- Outcome
- leaf photosynthetic rate and water use efficiencye6
- Direction
- decreasede6
- Comparator
- CKe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e6“The leaf photosynthetic rate and water use efficiency of seedlings were decreased very significantly compared with that of the CK”
Claim · model-written summary
Substrate extract from 3 years of cultivation increased leaf stomatal conductance, intercellular CO2 concentration and transpiration rate of cucumber seedlings very significantly relative to the CK.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cultivation 3 years substrate extracte2
- Outcome
- leaf stomatal conductance,intercellular CO2 concentration and transpiration ratee7
- Direction
- increasede7
- Comparator
- CKe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e7“The leaf stomatal conductance,intercellular CO2 concentration and transpiration rate of seedlings were increased very significantly compared with that of the CK”
Claim · model-written summary
Substrate extract from 3 years of cultivation decreased the root-shoot ratio and G value of cucumber seedlings significantly relative to the 1-year extract.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cultivation 3 years substrate extracte2
- Outcome
- seedling root-shoot ratio,G valuee1
- Direction
- decreasede1
- Comparator
- cultivation 1 year substrate extract treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e1“The seedling root-shoot ratio,G value,Chlorophyll a content,Chlorophyll b content,Chlorophyll(a+b)contents and Chlorophyll a/b value were decreased significantly compared with that of cultivation 1 year substrate extract treatment”
Claim · model-written summary
Substrate extract from 3 years of cultivation decreased chlorophyll a content, chlorophyll b content and chlorophyll (a+b) content of cucumber seedlings significantly relative to the 1-year extract.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cultivation 3 years substrate extracte2
- Outcome
- Chlorophyll a content,Chlorophyll b content,Chlorophyll(a+b)contentse1
- Direction
- decreasede1
- Comparator
- cultivation 1 year substrate extract treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e1“The seedling root-shoot ratio,G value,Chlorophyll a content,Chlorophyll b content,Chlorophyll(a+b)contents and Chlorophyll a/b value were decreased significantly compared with that of cultivation 1 year substrate extract treatment”
Claim · model-written summary
Substrate extract from 3 years of cultivation decreased the chlorophyll a/b value of cucumber seedlings significantly relative to the 1-year extract.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cultivation 3 years substrate extracte2
- Outcome
- Chlorophyll a/b valuee1
- Direction
- decreasede1
- Comparator
- cultivation 1 year substrate extract treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e2“After treating cucumber seeds and seedlings with cultivation 3 years substrate extract”
e1“The seedling root-shoot ratio,G value,Chlorophyll a content,Chlorophyll b content,Chlorophyll(a+b)contents and Chlorophyll a/b value were decreased significantly compared with that of cultivation 1 year substrate extract treatment”
Claim · model-written summary
The dry density, pore water and pH of the 3-year substrate increased very significantly relative to the 1-year substrate.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- dry density,pore water,pHe1
- Direction
- increasede1
- Comparator
- cultivation 1 yeare1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e1“the dry density,pore water,pH and EC values of cultivation 3 years substrate were increased very significantly compared with that of cultivation 1 year”
Claim · model-written summary
The EC value of the 3-year substrate increased very significantly relative to the 1-year substrate.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- EC valuese1
- Direction
- increasede1
- Comparator
- cultivation 1 yeare1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e1“the dry density,pore water,pH and EC values of cultivation 3 years substrate were increased very significantly compared with that of cultivation 1 year”
Claim · model-written summary
The total porosity and pore space of the 3-year substrate decreased very significantly relative to the 1-year substrate.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- total porosity and poree1
- Direction
- decreasede1
- Comparator
- cultivation 1 yeare1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taking cucumber(Cucumis sativus L.)seeds and seedlings as test materials”
e1“While the total porosity and pore of cultivation 3 years substrate were decreased very significantly compared with cultivation 1 year”
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