Abstract
Relating to recommended nitrogen fertilization (RNF),soil NO_3~--N dynamics and nitrogen miner- alization in the North China Plain,most former research focused on winter wheat and summer maize,where- as almost no research involved spring maize.In order to further understand the advantages of RNF,and make the nitrogen fertilization strategy in spring maize season more reasonable.A field experiment included three nitrogen managements (zero nitrogen fertilization,ZNF;traditional nitrogen fertilization,TNF;rec- ommended nitrogen fertilization,RNF) focusing on characteristics of soil NO_3~--N dyna mics and nitrogen mineralization was conducted from 2005 to 2007 in Dongbeiwang experimental station.In TNF,NO_3~- -N content in 0-90 cm soil level showed a single peak curve,and the peak value was over 400 kg/hm~2.An ac- cumulation of NO_3~--N in 90-150 cm soil level was also found in TNF,that making a great threaten of ni- trogen leaching.ZNF presented a strong net nitrogen mineralization tendency,and a cooperativity between net N mineralization rate and plant growth rate was also found,however the soil nitrogen supplying capacity declined annually.In RNF,NO_3~--N content in 0-90 cm soil level was controlled in the range of 90～220 kg/hm~2,that not only ensured plants uptake normally,but also decreased N-leaching loss.In the three years,RNF saved 475 kg/km~2 nitrogen fertilizer totally,and improved nitrogen use efficiency 14%.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Under traditional nitrogen fertilization, soil NO3-N content in the 0-90 cm layer showed a single peak above 400 kg/hm2 in spring maize.
- Treatment
- TNFe1
- Outcome
- NO_3~--N content in 0-90 cm soil levele1
- Value
- over 400 kg/hm~2e1
- Qualifier
- single peak curvee1
- Setting
- Dongbeiwang experimental statione2
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e1“In TNF,NO_3~--N content in 0-90 cm soil level showed a single peak curve, and the peak value was over 400 kg/hm~2”
e2“was conducted from 2005 to 2007 in Dongbeiwang experimental station”
Claim · model-written summary
Under traditional nitrogen fertilization, NO3-N accumulated in the 90-150 cm soil layer of spring maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e2“was conducted from 2005 to 2007 in Dongbeiwang experimental station”
e1“of NO_3~--N in 90-150 cm soil level was also found in TNF”
Claim · model-written summary
Zero nitrogen fertilization gave a strong net nitrogen mineralization tendency in spring maize.
- Treatment
- ZNFe3
- Outcome
- net nitrogen mineralization tendencye3
- Qualifier
- stronge3
- Setting
- Dongbeiwang experimental statione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e2“was conducted from 2005 to 2007 in Dongbeiwang experimental station”
e3“ZNF presented a strong net nitrogen mineralization tendency,and a cooperativity between net N mineralization rate and plant growth rate was also found,however the soil nitrogen supplying capacity declined annually”
Claim · model-written summary
Net N mineralization rate and plant growth rate showed a cooperativity under zero nitrogen fertilization in spring maize.
- Treatment
- ZNFe3
- Outcome
- plant growth ratee3
- Qualifier
- cooperativity between net N mineralization rate and plant growth ratee3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e3“ZNF presented a strong net nitrogen mineralization tendency,and a cooperativity between net N mineralization rate and plant growth rate was also found,however the soil nitrogen supplying capacity declined annually”
Claim · model-written summary
Under zero nitrogen fertilization, the soil nitrogen supplying capacity declined annually.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e3“ZNF presented a strong net nitrogen mineralization tendency,and a cooperativity between net N mineralization rate and plant growth rate was also found,however the soil nitrogen supplying capacity declined annually”
Claim · model-written summary
Under recommended nitrogen fertilization, soil NO3-N content in the 0-90 cm layer was controlled at 90-220 kg/hm2.
- Treatment
- RNFe4
- Outcome
- NO_3~--N content in 0-90 cm soil levele4
- Value
- 90～220 kg/hm~2e4
- Setting
- Dongbeiwang experimental statione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e2“was conducted from 2005 to 2007 in Dongbeiwang experimental station”
e4“In RNF,NO_3~--N content in 0-90 cm soil level was controlled in the range of 90～220 kg/hm~2,that not only ensured plants uptake normally,but also decreased N-leaching loss”
Claim · model-written summary
Recommended nitrogen fertilization decreased N-leaching loss compared with the other managements in spring maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e2“was conducted from 2005 to 2007 in Dongbeiwang experimental station”
e4“In RNF,NO_3~--N content in 0-90 cm soil level was controlled in the range of 90～220 kg/hm~2,that not only ensured plants uptake normally,but also decreased N-leaching loss”
Claim · model-written summary
Recommended nitrogen fertilization ensured normal plant nitrogen uptake in spring maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e2“was conducted from 2005 to 2007 in Dongbeiwang experimental station”
e4“In RNF,NO_3~--N content in 0-90 cm soil level was controlled in the range of 90～220 kg/hm~2,that not only ensured plants uptake normally,but also decreased N-leaching loss”
Claim · model-written summary
Recommended nitrogen fertilization saved 475 kg/km2 of nitrogen fertilizer over the three years in spring maize.
- Treatment
- RNFe5
- Outcome
- nitrogen fertilizere5
- Direction
- savede5
- Value
- 475 kg/km~2e5
- Qualifier
- In the three yearse5
- Setting
- Dongbeiwang experimental statione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e2“was conducted from 2005 to 2007 in Dongbeiwang experimental station”
e5“In the three years, RNF saved 475 kg/km~2 nitrogen fertilizer totally, and improved nitrogen use efficiency 14%”
Claim · model-written summary
Recommended nitrogen fertilization improved nitrogen use efficiency by 14% in spring maize over three years.
- Treatment
- RNFe5
- Outcome
- nitrogen use efficiencye5
- Direction
- improvede5
- Value
- 14%e5
- Qualifier
- In the three yearse5
- Setting
- Dongbeiwang experimental statione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Maize Seasons”
e2“was conducted from 2005 to 2007 in Dongbeiwang experimental station”
e5“In the three years, RNF saved 475 kg/km~2 nitrogen fertilizer totally, and improved nitrogen use efficiency 14%”
The same questions in other papers
fertilization · nutrient: efficiency · Zea mays (maize)Results differ
173 papers in the same direction as this paper · 12 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- negative
185 papers more in this group
See all 189 papers →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.