Abstract
Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice using 15N tracer techniques in the early seasons of 2006 and 2007. The test plant was Jinyou 253.Four treatments,no tillage-straw incorporation(NT-S),no tillage(NT),conventional tillage-straw incorporation(CT-S),conventional tillage(CT) were designed.The results showed that: 1) Nitrogen fertilizer uptake and distribution in rice plants were influenced by soil tillage practices.NT increased the ratio of nitrogen fertilizer uptake in grain and root,and decreased the distribution in leaves and stem.2) Lower grain yield was observed under NT compared to CT,but the difference was not significant.The difference of total nitrogen uptake in rice plants was not significant under different tillage practices,but higher proportion of nitrogen uptake from fertilizer and nitrogen recovery efficiency were found under NT compare to CT.3) Straw incorporation had a significant effect on nitrogen fertilizer utilization.Under NT-S decreased the accumulate of nitrogen uptaken from basal and tillering fertilizer,however,increased nitrogen uptake of fertilizer at earring.Under CT-S increased accumulate of nitrogen fertilizer of each stage of the growing period,consequently,increased the total nitrogen fertilizer absorption significantly.4) Straw incorporation increased rice grain yield under both tillage practices,but decreased nitrogen fertilizer recovery efficiency under no tillage.
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Claims 10
Claim · model-written summary
No tillage increased the ratio of nitrogen fertilizer uptake in rice grain and root compared with conventional tillage.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- grain and roote2
- Treatment
- no tillagee1
- Outcome
- nitrogen fertilizer uptakee2
- Direction
- increasede2
- Comparator
- conventional tillagee1
- Setting
- Pot experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e1“Four treatments,no tillage-straw incorporation(NT-S),no tillage(NT),conventional tillage-straw incorporation(CT-S),conventional tillage(CT) were designed”
e2“NT increased the ratio of nitrogen fertilizer uptake in grain and root, and decreased the distribution in leaves and stem”
Claim · model-written summary
No tillage decreased the distribution of fertilizer nitrogen in rice leaves and stem compared with conventional tillage.
- Taxon
- riceOryza sativae0
- Organ / stage
- leaves and steme2
- Treatment
- no tillagee1
- Outcome
- distributione2
- Direction
- decreasede2
- Comparator
- conventional tillagee1
- Setting
- Pot experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e1“Four treatments,no tillage-straw incorporation(NT-S),no tillage(NT),conventional tillage-straw incorporation(CT-S),conventional tillage(CT) were designed”
e2“NT increased the ratio of nitrogen fertilizer uptake in grain and root, and decreased the distribution in leaves and stem”
Claim · model-written summary
Total nitrogen uptake in rice did not differ significantly between tillage practices.
- Taxon
- riceOryza sativae3
- Treatment
- different tillage practicese3
- Outcome
- total nitrogen uptakee3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The difference of total nitrogen uptake in rice plants was not significant under different tillage practices”
Claim · model-written summary
No tillage gave a higher proportion of nitrogen uptake from fertilizer and higher nitrogen recovery efficiency than conventional tillage.
- Taxon
- riceOryza sativae0
- Treatment
- NTe4
- Outcome
- proportion of nitrogen uptake from fertilizer and nitrogen recovery efficiencye4
- Direction
- highere4
- Comparator
- CTe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e4“higher proportion of nitrogen uptake from fertilizer and nitrogen recovery efficiency were found under NT compare to CT”
Claim · model-written summary
No tillage gave lower grain yield than conventional tillage, but the difference was not significant.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e5“Lower grain yield was observed under NT compared to CT, but the difference was not significant”
Claim · model-written summary
Under NT-S, accumulated nitrogen uptake from basal and tillering fertilizer decreased in rice.
- Taxon
- riceOryza sativae0
- Treatment
- NT-Se6
- Outcome
- accumulate of nitrogen uptaken from basal and tillering fertilizere6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e6“Under NT-S decreased the accumulate of nitrogen uptaken from basal and tillering fertilizer”
Claim · model-written summary
Under NT-S, nitrogen uptake of fertilizer at earring increased in rice.
- Taxon
- riceOryza sativae0
- Organ / stage
- at earringe7
- Treatment
- NT-Se6
- Outcome
- nitrogen uptake of fertilizere7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e6“Under NT-S decreased the accumulate of nitrogen uptaken from basal and tillering fertilizer”
e7“increased nitrogen uptake of fertilizer at earring”
Claim · model-written summary
Straw incorporation had a significant effect on nitrogen fertilizer utilization in rice.
- Taxon
- riceOryza sativae0
- Treatment
- Straw incorporatione1
- Outcome
- nitrogen fertilizer utilizatione1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e1“Straw incorporation had a significant effect on nitrogen fertilizer utilization”
Claim · model-written summary
Straw incorporation increased rice grain yield under both tillage practices.
- Taxon
- riceOryza sativae0
- Treatment
- Straw incorporatione1
- Outcome
- grain yielde1
- Direction
- increasede1
- Qualifier
- under both tillage practicese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e1“Straw incorporation increased rice grain yield under both tillage practices”
Claim · model-written summary
Straw incorporation decreased nitrogen fertilizer recovery efficiency under no tillage.
- Taxon
- riceOryza sativae0
- Treatment
- Straw incorporatione1
- Outcome
- nitrogen fertilizer recovery efficiencye2
- Direction
- decreasede2
- Qualifier
- under no tillagee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted to evaluate the influence of no tillage with straw incorporation on characteristics of nitrogen utilization and distribution in rice”
e1“Straw incorporation increased rice grain yield under both tillage practices”
e2“decreased nitrogen fertilizer recovery efficiency under no tillage”
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