Abstract
Contents of nitrate and nitrite in leafy vegetable and in vegetable soil as affected by combined applications of organic and chemical fertilizers were determined through plot experiment and laboratory analysis.The results show that the combined application of chemical and organic fertilizers decreased the contents of nitrate in the vegetable and the soil,and reduced downward leaching of nitrate in the soil significantly.Especially when the ratio of organic manure and chemical fertilizer was 1∶1 much better effects could be observed,such as higher yield of Chinese cabbage,and lower nitrate concentration in the vegetable and in the subsoil of the vegetable field.
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Claims 6
Claim · model-written summary
Combined chemical and organic fertilizers lowered vegetable nitrate content.
- Taxon
- vegetablee0
- Treatment
- combined application of chemical and organic fertilizerse0
- Outcome
- contents of nitrate in the vegetablee0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“combined application of chemical and organic fertilizers decreased the contents of nitrate in the vegetable and the soil”
Claim · model-written summary
Combined fertilizers lowered soil nitrate content.
- Taxon
- vegetablee0
- Treatment
- combined application of chemical and organic fertilizerse0
- Outcome
- contents of nitrate in the vegetable and the soile0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“combined application of chemical and organic fertilizers decreased the contents of nitrate in the vegetable and the soil”
Claim · model-written summary
Combined fertilizers significantly reduced downward soil nitrate leaching.
- Taxon
- vegetablee0
- Treatment
- combined application of chemical and organic fertilizerse0
- Outcome
- downward leaching of nitrate in the soile0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“combined application of chemical and organic fertilizers decreased the contents of nitrate in the vegetable and the soil,and reduced downward leaching of nitrate in the soil significantly”
Claim · model-written summary
A 1∶1 organic manure to chemical fertilizer ratio gave higher Chinese cabbage yield.
- Taxon
- Chinese cabbage
Brassica rapa subsp. pekinensise0 - Treatment
- ratio of organic manure and chemical fertilizer was 1∶1e0
- Outcome
- yield of Chinese cabbagee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ratio of organic manure and chemical fertilizer was 1∶1 much better effects could be observed,such as higher yield of Chinese cabbage”
Claim · model-written summary
The 1∶1 ratio gave lower nitrate concentration in the vegetable.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise0
- Treatment
- ratio of organic manure and chemical fertilizer was 1∶1e0
- Outcome
- nitrate concentration in the vegetablee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ratio of organic manure and chemical fertilizer was 1∶1 much better effects could be observed,such as higher yield of Chinese cabbage,and lower nitrate concentration in the vegetable and in the subsoil of the vegetable field”
Claim · model-written summary
The 1∶1 ratio gave lower nitrate concentration in subsoil.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise0
- Treatment
- ratio of organic manure and chemical fertilizer was 1∶1e0
- Outcome
- nitrate concentration in the vegetable and in the subsoil of the vegetable fielde0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ratio of organic manure and chemical fertilizer was 1∶1 much better effects could be observed,such as higher yield of Chinese cabbage,and lower nitrate concentration in the vegetable and in the subsoil of the vegetable field”
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