Abstract
Effects of nitrogen,phosphate,potassium,sulphur,lemon acid and BR on oil content in rapeseed were studied by a Quadratic-Orthogonal-Rotation-Combination experiment in Changsha in 2005~2007.Analysis on effect of single factor showed a negative linearity relationship existed between nitrogen rate and oil content,and a conic negative relationship existed between oil content and rate,which showed that application of phosphate and potassium in a certain range was advantageous to improvement of oil content,while the excess application rate was disadvantageous.The relationship between sulphur rate and oil content was related to sulphur content in experiment field.In this study,higher oil content could be realized under condition of low nitrogen rate,medium phosphate rate and medium potassium rate.In 2006,the highest oil content,45.87%,was obtained when application rate of pure nitrogen,phosphate,potassium and sulphur was 0,112.5,112.5 and 60 kg/hm2,respectively.In 2007,the highest oil content,44.08%,was obtained at the same nitrogen,phosphate and potassium rate as 2006.Effect of BR and lemon acid was not significant,which was probably related to the application rate and period.
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Claims 9
Claim · model-written summary
Nitrogen rate had a negative linear relationship with rapeseed oil content.
Verbatim
e0“a negative linearity relationship existed between nitrogen rate and oil content”
t0“Oil Content in Rapeseed”
Claim · model-written summary
Phosphate application within a certain range favored oil content, whereas excess was unfavorable.
Verbatim
e0“application of phosphate and potassium in a certain range was advantageous to improvement of oil content,while the excess application rate was disadvantageous”
t0“Oil Content in Rapeseed”
Claim · model-written summary
Potassium application within a certain range favored oil content, whereas excess was unfavorable.
Verbatim
e0“application of phosphate and potassium in a certain range was advantageous to improvement of oil content,while the excess application rate was disadvantageous”
t0“Oil Content in Rapeseed”
Claim · model-written summary
The sulfur-rate relationship with oil content depended on field sulfur content.
- Taxon
- Rapeseedt0
- Treatment
- sulphur ratee0
- Outcome
- oil contente0
- Qualifier
- sulphur content in experiment fielde0
Not reportedDirection
Verbatim
e0“The relationship between sulphur rate and oil content was related to sulphur content in experiment field”
t0“Oil Content in Rapeseed”
Claim · model-written summary
Low nitrogen, medium phosphate, and medium potassium yielded higher oil content.
- Taxon
- Rapeseedt0
- Treatment
- low nitrogen rate,medium phosphate rate and medium potassium ratee0
- Outcome
- oil contente0
- Direction
- highere0
Not reportedComparator
Verbatim
e0“higher oil content could be realized under condition of low nitrogen rate,medium phosphate rate and medium potassium rate”
t0“Oil Content in Rapeseed”
Claim · model-written summary
In 2006 the maximum oil content was 45.87% under the stated nutrient application rates.
Verbatim
e0“In 2006,the highest oil content,45.87%,was obtained when application rate of pure nitrogen,phosphate,potassium and sulphur was 0,112.5,112.5 and 60 kg/hm2,respectively”
t0“Oil Content in Rapeseed”
Claim · model-written summary
In 2007 the maximum oil content was 44.08% at the same N, P and K rates as 2006.
Verbatim
e0“In 2007,the highest oil content,44.08%,was obtained at the same nitrogen,phosphate and potassium rate as 2006”
t0“Oil Content in Rapeseed”
Claim · model-written summary
BR had no statistically significant effect on oil content.
Not reportedComparatorDirection
Verbatim
e0“Effect of BR and lemon acid was not significant”
e1“on oil content in rapeseed”
t0“Oil Content in Rapeseed”
Claim · model-written summary
Lemon acid had no statistically significant effect on oil content.
Not reportedComparatorDirection
Verbatim
e0“Effect of BR and lemon acid was not significant”
e1“on oil content in rapeseed”
t0“Oil Content in Rapeseed”
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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.