Abstract
In order to study the effects of different fertilizations on maize biomass,its nutrient uptake,and their relationship with soil nutrients,a long-term fertilization experiment was established in 1986 in red soil,Jinxian,Jiangxi province.The results were obtained as following:(1)Long-term application of chemical fertilizer decreased soil pH,whereas the chemical fertilizers combined with organic manure relieved soil acidification and increased SOC and available nutrient contents significantly.(2)Compared with CK treatment,application of N fertilizer alone reduced the amount of maize kernel,cob,straw and root,and balanced fertilization(NPK,2NPK) and organic fertilizer increased them by 1.1~2.9 times.The maize biomass was positively correlated with the soil pH,SOC,N and P significantly.(3)The distribution of N in maize was mainly in kernel and straw,accounting for 41.8%~61.3% and 30.3%~48.4% of total N in crop,respectively.P content was the highest in kernel(61.8%~73.9% of total P in crop),and K content was the highest in straw(accounting for 51.4%~67.9%).It was concluded that the combination of chemical and organic fertilizers promoted nutrient uptake as well as maize yield.The order of harvest index was P N K.
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Claims 11
Claim · model-written summary
Chemical fertilizer decreased soil pH.
Not reportedTaxonComparator
Verbatim
e0“Long-term application of chemical fertilizer decreased soil pH”
Claim · model-written summary
Adding manure to chemical fertilizer relieved soil acidification and significantly increased SOC and available nutrients.
- Treatment
- chemical fertilizers combined with organic manuree0
- Outcome
- soil acidification and increased SOC and available nutrient contentse0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“chemical fertilizers combined with organic manure relieved soil acidification and increased SOC and available nutrient contents significantly”
Claim · model-written summary
N fertilizer alone reduced maize kernel, cob, straw and root amounts relative to CK.
- Treatment
- application of N fertilizer alonee0
- Outcome
- amount of maize kernel,cob,straw and roote0
- Direction
- reducede0
- Comparator
- CK treatmente0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with CK treatment,application of N fertilizer alone reduced the amount of maize kernel,cob,straw and root”
Claim · model-written summary
Balanced fertilization increased maize biomass components 1.1 to 2.9 times relative to CK.
- Treatment
- balanced fertilization(NPK,2NPK)e0
- Outcome
- kernel,cob,straw and roote1
- Direction
- increasede0
- Value
- 1.1~2.9 timese0
- Comparator
- CK treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“balanced fertilization(NPK,2NPK) and organic fertilizer increased them by 1.1~2.9 times”
e1“Compared with CK treatment,application of N fertilizer alone reduced the amount of maize kernel,cob,straw and root”
Claim · model-written summary
Organic fertilizer increased maize biomass components 1.1 to 2.9 times relative to CK.
- Treatment
- organic fertilizere0
- Outcome
- kernel,cob,straw and roote1
- Direction
- increasede0
- Value
- 1.1~2.9 timese0
- Comparator
- CK treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic fertilizer increased them by 1.1~2.9 times”
e1“Compared with CK treatment,application of N fertilizer alone reduced the amount of maize kernel,cob,straw and root”
Claim · model-written summary
Maize biomass correlated positively and significantly with soil pH, SOC, N and P.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maize biomass was positively correlated with the soil pH,SOC,N and P significantly.”
Claim · model-written summary
Maize nitrogen was mainly in kernels, at 41.8% to 61.3% of total crop N.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The distribution of N in maize was mainly in kernel and straw,accounting for 41.8%~61.3% and 30.3%~48.4% of total N in crop,respectively.”
Claim · model-written summary
Maize nitrogen in straw accounted for 30.3% to 48.4% of total crop N.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The distribution of N in maize was mainly in kernel and straw,accounting for 41.8%~61.3% and 30.3%~48.4% of total N in crop,respectively.”
Claim · model-written summary
Kernel phosphorus was highest, at 61.8% to 73.9% of total crop P.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P content was the highest in kernel(61.8%~73.9% of total P in crop)”
e1“The distribution of N in maize”
Claim · model-written summary
Potassium content was highest in straw, accounting for 51.4% to 67.9%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K content was the highest in straw(accounting for 51.4%~67.9%)”
e1“The distribution of N in maize”
Claim · model-written summary
Combined chemical and organic fertilizers promoted nutrient uptake and maize yield.
- Treatment
- combination of chemical and organic fertilizerse0
- Outcome
- nutrient uptake as well as maize yielde0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combination of chemical and organic fertilizers promoted nutrient uptake as well as maize yield”
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