Abstract
To prove the effects of the fertilization on protein content of paddy rice, the present experiments were carried out as follows. (1) Planting density was altered as 5O, 80, 110 or 140 hills/3.3m2, and the levels of basaldressing applied were 0.56, 0.75, 0.94 or 1.13kgN/are. The amounts of phosphatic and potassic fertilizer were normally fertilized. (2) In addition to basal dressing, top dressing of 0.05∼0.25g N/hill were applied on various stage before or after heading stage. (3) Two kinds of N, P and K fertilizer experiment paddy fields were used, the one is the usual field continued 12 years for the experiment and the other is newly opened field for the experiment. The results are summarized as follows. 1. As to associated effects of planting density and nitrogen supply on protein content (%) and protein production (protein % × grain yield), it was observed that the more nitrogenous fertilizer applied and the more spacing was wide, the more protein % in rice grain was increased. Ultimately, protein % depends on nitrogen supply per hill. Protein production also tended to increase in higher levels of nitrogenous fertilizer in any planting density, but it was hardly influenced by planting density in any nitrogen levels. 2. The most effective stage of top dressing of nitrogenous fertilizer on the protein % is the heading stage. Before heading stage the effect was slight. After heading stage, the effective period keep on decently long time but the effect make a slow descent gradually. The more nitrogenous fertilizer applied, as top dressing the more protein % was increased and it was more effect to apply all amount of it at the nearer stage to heading date. Top dressing of 0.25g N/hill at the heading stage increased protein content by 38% compared with non top dessing. 3. As to the protein content in rice grain of each plot in N, P and K fertilizer experiment field, in case of usual paddy field, protein % was most high in N P K plot and was inferior any other plots that were excepted each nutrient element. On the other hand, in case of new paddy field with great P-absorptive coefficient, non-application plots of phosphatic fertilizer increased percent of protein by 20-30%compared with N P K plots, but these plots were accompanied remarkably by the decrease in grain yield, consequently reduced the total protein production per unit area.
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 13
Claim · model-written summary
Top dressing of 0.25 g N per hill at heading increased rice grain protein content by 38% compared with no top dressing.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- heading stagee7
- Treatment
- Top dressing of 0.25g N/hille7
- Outcome
- protein contente7
- Direction
- increasede7
- Value
- 38%e7
- Comparator
- non top dessinge7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e7“Top dressing of 0.25g N/hill at the heading stage increased protein content by 38% compared with non top dessing”
Claim · model-written summary
Rice grain protein percentage increased with more nitrogenous fertilizer applied and with wider plant spacing.
- Taxon
- riceOryza sativae1
- Treatment
- nitrogenous fertilizer appliede1
- Outcome
- protein %e1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the more nitrogenous fertilizer applied and the more spacing was wide, the more protein % in rice grain was increased”
Claim · model-written summary
Protein production tended to increase at higher levels of nitrogenous fertilizer in any planting density.
- Taxon
- riceOryza sativat0
- Treatment
- higher levels of nitrogenous fertilizere2
- Outcome
- Protein productione2
- Direction
- tended to increasee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e2“Protein production also tended to increase in higher levels of nitrogenous fertilizer in any planting density, but it was hardly influenced by planting density in any nitrogen levels”
Claim · model-written summary
Planting density hardly influenced protein production at any nitrogen level.
- Taxon
- riceOryza sativat0
- Treatment
- planting densitye2
- Outcome
- protein productione2
- Direction
- no_changeinferrede2
- Qualifier
- hardly influencede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e2“Protein production also tended to increase in higher levels of nitrogenous fertilizer in any planting density, but it was hardly influenced by planting density in any nitrogen levels”
Claim · model-written summary
The heading stage was the most effective stage of nitrogen top dressing for rice grain protein percentage.
- Taxon
- riceOryza sativat0
- Organ / stage
- heading stagee3
- Treatment
- top dressing of nitrogenous fertilizere3
- Outcome
- protein %e3
- Direction
- most effectivee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e3“The most effective stage of top dressing of nitrogenous fertilizer on the protein % is the heading stage”
Claim · model-written summary
Top dressing before heading had only a slight effect on rice grain protein percentage.
- Taxon
- riceOryza sativat0
- Organ / stage
- Before heading stagee4
- Treatment
- top dressing of nitrogenous fertilizere3
- Outcome
- protein %e3
- Direction
- no_changeinferrede4
- Qualifier
- slighte4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e4“Before heading stage the effect was slight”
e3“The most effective stage of top dressing of nitrogenous fertilizer on the protein % is the heading stage”
Claim · model-written summary
Top dressing after heading kept a long effective period on rice grain protein percentage but its effect declined gradually.
- Taxon
- riceOryza sativat0
- Organ / stage
- After heading stagee5
- Treatment
- top dressing of nitrogenous fertilizere3
- Outcome
- protein %e3
- Direction
- decreaseinferrede5
- Qualifier
- the effective period keep on decently long timee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e5“After heading stage, the effective period keep on decently long time but the effect make a slow descent gradually”
e3“The most effective stage of top dressing of nitrogenous fertilizer on the protein % is the heading stage”
Claim · model-written summary
Protein percentage increased with more nitrogen applied as top dressing.
- Taxon
- riceOryza sativat0
- Treatment
- top dressinge6
- Outcome
- protein %e6
- Direction
- increasede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e6“The more nitrogenous fertilizer applied, as top dressing the more protein % was increased and it was more effect to apply all amount of it at the nearer stage to heading date”
Claim · model-written summary
Applying all top-dressed nitrogen nearer to the heading date had a greater effect on protein percentage.
- Taxon
- riceOryza sativat0
- Organ / stage
- nearer stage to heading datee6
- Treatment
- top dressinge6
- Outcome
- protein %e6
- Direction
- more effecte6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e6“The more nitrogenous fertilizer applied, as top dressing the more protein % was increased and it was more effect to apply all amount of it at the nearer stage to heading date”
Claim · model-written summary
In the usual paddy field, the N P K plot had the highest protein percentage, above plots lacking any single nutrient.
- Taxon
- riceOryza sativat0
- Treatment
- N P K plote6
- Outcome
- protein %e6
- Direction
- most highe6
- Comparator
- any other plots that were excepted each nutrient elemente6
- Setting
- usual paddy fielde6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e6“in case of usual paddy field, protein % was most high in N P K plot and was inferior any other plots that were excepted each nutrient element”
Claim · model-written summary
In a new paddy field with high P absorption, omitting phosphatic fertilizer increased rice grain protein percentage by 20-30% compared with NPK plots.
- Taxon
- riceOryza sativat0
- Treatment
- non-application plots of phosphatic fertilizere7
- Outcome
- percent of proteine7
- Direction
- increasede7
- Value
- 20-30%e7
- Comparator
- N P K plotse7
- Setting
- new paddy field with great P-absorptive coefficiente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e7“in case of new paddy field with great P-absorptive coefficient, non-application plots of phosphatic fertilizer increased percent of protein by 20-30%compared with N P K plots, but these plots were accompanied remarkably by the decrease in grain yield, consequently reduced the total protein production per unit area”
Claim · model-written summary
Omitting phosphatic fertilizer in the new paddy field decreased grain yield compared with NPK plots.
- Taxon
- riceOryza sativat0
- Treatment
- non-application plots of phosphatic fertilizere7
- Outcome
- grain yielde7
- Direction
- decreasee7
- Comparator
- N P K plotse7
- Setting
- new paddy field with great P-absorptive coefficiente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e7“in case of new paddy field with great P-absorptive coefficient, non-application plots of phosphatic fertilizer increased percent of protein by 20-30%compared with N P K plots, but these plots were accompanied remarkably by the decrease in grain yield, consequently reduced the total protein production per unit area”
Claim · model-written summary
Omitting phosphatic fertilizer in the new paddy field reduced total protein production per unit area compared with NPK plots.
- Taxon
- riceOryza sativat0
- Treatment
- non-application plots of phosphatic fertilizere7
- Outcome
- total protein production per unit areae7
- Direction
- reducede7
- Comparator
- N P K plotse7
- Setting
- new paddy field with great P-absorptive coefficiente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Protein Content in Rice Grain”
e7“in case of new paddy field with great P-absorptive coefficient, non-application plots of phosphatic fertilizer increased percent of protein by 20-30%compared with N P K plots, but these plots were accompanied remarkably by the decrease in grain yield, consequently reduced the total protein production per unit area”
The same questions in other papers
nitrogen · quality: protein · Oryza sativa (rice)Results differ
88 papers in the same direction as this paper · 10 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- no effect
96 papers more in this group
See all 100 papers →fertilization · quality: protein · Oryza sativa (rice)Results differ
113 papers in the same direction as this paper · 11 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- no effect
122 papers more in this group
See all 126 papers →fertilization · yield · Oryza sativa (rice)Positive and negative results
271 papers in the same direction as this paper · 3,183 in the opposite direction
- positive
- positive
- positive
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.