Abstract
Field trials were conducted to study the effect of soil nutrient contents in topsoil(0~15 cm) and subsoil(15~30 cm) and rice yield on the basis of the application of chemical fertilizer adding organic fertilizer. The results showed that the increasing application of cattle manure and cake fertilizer obviously improved the contents of organic matter, total nitrogen and available phosphorus in soil, with increase by 32.17% and 10.96%, 30.69% and 6.56%, 131.48% and 31.74% in topsoil, while improved by 10.72% and 4.77%, 6.72% and 3.64%, 62.69% and 11.40% in subsoil, respectively compared with the single fertilizer treatment. The treaments of increasing application of organic fertilizers increased rice yield and inter-annual stability. The yield of the increasing application of cattle manure and cake fertilizer treatments increased by 7.98% and 7.72%, while the coefficient of variation decreased by 3.90% and 3.20%. There were positive correlations of a certain extent between the rice yield and the soil nutrient indexes. The correlation coefficients of the yield with soil organic matter, total nitrogen and available phosphorus in subsoil was higher than those in topsoil. The contents of soil organic matter, total nitrogen and available phosphorus presented extremely significant(P<0.01) correlations with rice yield stability in topsoil and subsoil. In summary, increasing application of organic fertilizer had good effects on soil nutrient contents, rice yield and its stability. The emphasis of fertility betterment should be put on subsoil in production because the nutrient contents in topsoil and subsoil both could present an appreciable effect on rice yield and its stability.
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Claims 11
Claim · model-written summary
Cattle manure raised topsoil organic matter by 32.17%.
- Taxon
- rice
Oryza sativat0 - Treatment
- cattle manuree0
- Outcome
- organic mattere0
- Direction
- improvede0
- Value
- 32.17%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cattle manure and cake fertilizer obviously improved the contents of organic matter, total nitrogen and available phosphorus in soil, with increase by 32.17% and 10.96%”
t0“rice yield on the basis of the application of chemical fertilizer adding organic fertilizer”
Claim · model-written summary
Cake fertilizer raised topsoil organic matter by 10.96%.
- Taxon
- riceOryza sativat0
- Treatment
- cake fertilizere0
- Outcome
- organic mattere0
- Direction
- improvede0
- Value
- 10.96%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cake fertilizer obviously improved the contents of organic matter, total nitrogen and available phosphorus in soil, with increase by 32.17% and 10.96%”
t0“rice yield on the basis of the application of chemical fertilizer adding organic fertilizer”
Claim · model-written summary
Organic fertilizer increased rice yield and interannual stability.
- Taxon
- riceOryza sativae0
- Treatment
- increasing application of organic fertilizerse0
- Outcome
- rice yield and inter-annual stabilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treaments of increasing application of organic fertilizers increased rice yield and inter-annual stability”
Claim · model-written summary
Cattle manure raised yield by 7.98%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of the increasing application of cattle manure and cake fertilizer treatments increased by 7.98% and 7.72%”
t0“rice yield on the basis of the application of chemical fertilizer adding organic fertilizer”
Claim · model-written summary
Cake fertilizer raised yield by 7.72%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of the increasing application of cattle manure and cake fertilizer treatments increased by 7.98% and 7.72%”
t0“rice yield on the basis of the application of chemical fertilizer adding organic fertilizer”
Claim · model-written summary
Yield variation fell by 3.90% under cattle manure.
- Taxon
- riceOryza sativat0
- Treatment
- cattle manuree0
- Outcome
- coefficient of variatione0
- Direction
- decreasede0
- Value
- 3.90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of the increasing application of cattle manure and cake fertilizer treatments increased by 7.98% and 7.72%, while the coefficient of variation decreased by 3.90% and 3.20%”
t0“rice yield on the basis of the application of chemical fertilizer adding organic fertilizer”
Claim · model-written summary
Yield variation fell by 3.20% under cake fertilizer.
- Taxon
- riceOryza sativat0
- Treatment
- cake fertilizere0
- Outcome
- coefficient of variatione0
- Direction
- decreasede0
- Value
- 3.20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of the increasing application of cattle manure and cake fertilizer treatments increased by 7.98% and 7.72%, while the coefficient of variation decreased by 3.90% and 3.20%”
t0“rice yield on the basis of the application of chemical fertilizer adding organic fertilizer”
Claim · model-written summary
Rice yield correlated positively with soil nutrient indices.
- Taxon
- riceOryza sativae0
- Outcome
- rice yielde0
- Direction
- positive correlationse0
- Qualifier
- soil nutrient indexese0
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were positive correlations of a certain extent between the rice yield and the soil nutrient indexes”
Claim · model-written summary
Yield correlations with soil nutrients were stronger in subsoil than topsoil.
- Taxon
- riceOryza sativat0
- Outcome
- correlation coefficients of the yield with soil organic matter, total nitrogen and available phosphoruse0
- Direction
- highere0
- Comparator
- topsoile0
- Setting
- subsoile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlation coefficients of the yield with soil organic matter, total nitrogen and available phosphorus in subsoil was higher than those in topsoil”
t0“rice yield on the basis of the application of chemical fertilizer adding organic fertilizer”
Claim · model-written summary
Soil organic matter, nitrogen and phosphorus correlated very significantly with yield stability in both layers.
- Taxon
- riceOryza sativae0
- Outcome
- rice yield stabilitye0
- Qualifier
- soil organic matter, total nitrogen and available phosphoruse0
- Setting
- topsoil and subsoile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The contents of soil organic matter, total nitrogen and available phosphorus presented extremely significant(P<0.01) correlations with rice yield stability in topsoil and subsoil”
Claim · model-written summary
The authors recommend focusing fertility improvement on subsoil.
- Taxon
- riceOryza sativat0
- Outcome
- fertility betterment should be put on subsoil in productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The emphasis of fertility betterment should be put on subsoil in production”
t0“rice yield on the basis of the application of chemical fertilizer adding organic fertilizer”
The same questions in other papers
fertilization · yield · Oryza sativa (rice)Positive and negative results
3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative
- no effect
- no effect
- negative
3,451 papers more in this group
See all 3,455 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.