Abstract
The influences of excessive application of nitrogen fertilizer containing nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on nitrate accumulation and nutritional quality of pakchoi were studied in field experiment. Nitrogen fertilizers of new type formed by coordination of DMPP with ammonium sulfate and urea (ASN+DMPP, urea+DMPP) could reduce markedly nitrate accumulation, increase Vc, amino acid, soluble sugar and Zn content in pakchoi as compared with urea and ammonium sulphate nitrate (ASN), and improve quality, the action of (ASN+DMPP) was more obvious. Compared with ASN and urea, NO3--N content in pakchoi treated with ASN+DMPP reduced 16.0% and 14.1% respectively, all reaching marked level, urea+DMPP compared with urea and ASN, the content reduced 7.9% and 7.6% respectively, also reaching marked level. urea+DMPP and ASN+DMPP reduced obviously nitrate accumulation in stems and leaves, especially in stems. The inhibition range of ASN+DMPP was greater. In addition, ASN+DMPP could also alleviate the yield decrease effect caused by excessive application of nitrogen fertilizers.
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Claims 7
Claim · model-written summary
ASN+DMPP reduced pakchoi nitrate content by 16.0% compared with ASN.
Verbatim
e0“Compared with ASN and urea, NO3--N content in pakchoi treated with ASN+DMPP reduced 16.0% and 14.1% respectively, all reaching marked level”
Claim · model-written summary
ASN+DMPP reduced pakchoi nitrate content by 14.1% compared with urea.
Verbatim
e0“Compared with ASN and urea, NO3--N content in pakchoi treated with ASN+DMPP reduced 16.0% and 14.1% respectively, all reaching marked level”
Claim · model-written summary
Urea+DMPP reduced pakchoi nitrate content by 7.9% compared with urea.
Verbatim
e0“urea+DMPP compared with urea and ASN, the content reduced 7.9% and 7.6% respectively, also reaching marked level”
t0“nitrate accumulation of pakchoi”
Claim · model-written summary
Urea+DMPP reduced pakchoi nitrate content by 7.6% compared with ASN.
Verbatim
e0“urea+DMPP compared with urea and ASN, the content reduced 7.9% and 7.6% respectively, also reaching marked level”
t0“nitrate accumulation of pakchoi”
Claim · model-written summary
DMPP fertilizers increased vitamin C, amino acid, soluble sugar and zinc content in pakchoi relative to conventional fertilizers.
Verbatim
e0“Nitrogen fertilizers of new type formed by coordination of DMPP with ammonium sulfate and urea (ASN+DMPP, urea+DMPP) could reduce markedly nitrate accumulation, increase Vc, amino acid, soluble sugar and Zn content in pakchoi as compared with urea and ammonium sulphate nitrate (ASN), and improve quality, the action of (ASN+DMPP) was more obvious”
Claim · model-written summary
Both DMPP fertilizers reduced nitrate accumulation in pakchoi stems and leaves, especially stems.
- Taxon
- pakchoit0
- Organ / stage
- stems and leavese0
- Treatment
- urea+DMPP and ASN+DMPPe0
- Outcome
- nitrate accumulatione0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“urea+DMPP and ASN+DMPP reduced obviously nitrate accumulation in stems and leaves, especially in stems. The inhibition range of ASN+DMPP was greater.”
t0“nitrate accumulation of pakchoi”
Claim · model-written summary
ASN+DMPP alleviated the yield decrease from excessive nitrogen fertilizer.
Not reportedComparator
Verbatim
e0“ASN+DMPP could also alleviate the yield decrease effect caused by excessive application of nitrogen fertilizers”
t0“nitrate accumulation of pakchoi”
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See all 26 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.