Abstract
In order to know the effects of irrigation, deep ploughing, heavy rate application of fertilizers and their combined treatments on the nutrient uptake by crops and physical and chemical properties of soil, the present studies were carried out. The results obtained are as follows: 1) Generally, the amounts of nutrients absorbed by the upland rice and soybean increased with increasing the rate irrigation, deep ploughing and heavy application of fertilizers, especially the effect of irrigation was most conspicuous. The promotive effects were observed evidently between these treatments one another and the increments of nutrient absorption by the crops were very remarkable with combinations of two or three. 2) By deep ploughing, the soils underlain the top layer, which had very poor physical and chemical properties, were improved strikingly, especially increase of porosity and fertility were observed. Furthermore, it was recognized that the amelioration of acidity, increment in exchangeable bases and so on caused by irrigation were more remarkable in deep soil layer when treated together with deep ploughing. 3) From a stand point of status of nutrient absorption by crops and physical and chemical properties of soil, it was clarified that there was interaction among irrigation, heavy application of fertilizers and deep ploughing
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Claims 11
Claim · model-written summary
Irrigation increased nutrient absorption by upland rice.
- Taxon
- upland rice
Oryza sativae0 - Treatment
- irrigatione0
- Outcome
- amounts of nutrients absorbede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, the amounts of nutrients absorbed by the upland rice and soybean increased with increasing the rate irrigation, deep ploughing and heavy application of fertilizers, especially the effect of irrigation was most conspicuous.”
Claim · model-written summary
Irrigation increased nutrient absorption by soybean.
- Taxon
- soybean
Glycine maxe0 - Treatment
- irrigatione0
- Outcome
- amounts of nutrients absorbede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, the amounts of nutrients absorbed by the upland rice and soybean increased with increasing the rate irrigation, deep ploughing and heavy application of fertilizers, especially the effect of irrigation was most conspicuous.”
Claim · model-written summary
Deep ploughing increased nutrient absorption by upland rice.
- Taxon
- upland riceOryza sativae0
- Treatment
- deep ploughinge0
- Outcome
- amounts of nutrients absorbede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, the amounts of nutrients absorbed by the upland rice and soybean increased with increasing the rate irrigation, deep ploughing and heavy application of fertilizers, especially the effect of irrigation was most conspicuous.”
Claim · model-written summary
Deep ploughing increased nutrient absorption by soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- deep ploughinge0
- Outcome
- amounts of nutrients absorbede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, the amounts of nutrients absorbed by the upland rice and soybean increased with increasing the rate irrigation, deep ploughing and heavy application of fertilizers, especially the effect of irrigation was most conspicuous.”
Claim · model-written summary
Heavy fertilizer application increased nutrient absorption by upland rice.
- Taxon
- upland riceOryza sativae0
- Treatment
- heavy application of fertilizerse0
- Outcome
- amounts of nutrients absorbede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, the amounts of nutrients absorbed by the upland rice and soybean increased with increasing the rate irrigation, deep ploughing and heavy application of fertilizers, especially the effect of irrigation was most conspicuous.”
Claim · model-written summary
Heavy fertilizer application increased nutrient absorption by soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- heavy application of fertilizerse0
- Outcome
- amounts of nutrients absorbede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, the amounts of nutrients absorbed by the upland rice and soybean increased with increasing the rate irrigation, deep ploughing and heavy application of fertilizers, especially the effect of irrigation was most conspicuous.”
Claim · model-written summary
Combining two or three treatments markedly promoted crop nutrient absorption.
- Taxon
- cropse0
- Treatment
- combinations of two or threee0
- Outcome
- nutrient absorption by the cropse0
- Direction
- incrementse0
Not reportedComparator
Verbatim
e0“The promotive effects were observed evidently between these treatments one another and the increments of nutrient absorption by the crops were very remarkable with combinations of two or three.”
Claim · model-written summary
Deep ploughing increased soil porosity below the top layer.
Not reportedTaxonComparator
Verbatim
e0“By deep ploughing, the soils underlain the top layer, which had very poor physical and chemical properties, were improved strikingly, especially increase of porosity and fertility were observed.”
Claim · model-written summary
Deep ploughing increased soil fertility below the top layer.
Not reportedTaxonComparator
Verbatim
e0“By deep ploughing, the soils underlain the top layer, which had very poor physical and chemical properties, were improved strikingly, especially increase of porosity and fertility were observed.”
Claim · model-written summary
Irrigation combined with deep ploughing improved soil acidity more strongly in the deep layer.
- Treatment
- irrigatione0
- Outcome
- aciditye0
- Direction
- amelioratione0
- Qualifier
- when treated together with deep ploughinge0
Not reportedTaxonComparator
Verbatim
e0“Furthermore, it was recognized that the amelioration of acidity, increment in exchangeable bases and so on caused by irrigation were more remarkable in deep soil layer when treated together with deep ploughing.”
Claim · model-written summary
Irrigation combined with deep ploughing raised exchangeable bases more strongly in the deep layer.
- Treatment
- irrigatione0
- Outcome
- exchangeable basese0
- Direction
- incremente0
- Qualifier
- when treated together with deep ploughinge0
Not reportedTaxonComparator
Verbatim
e0“Furthermore, it was recognized that the amelioration of acidity, increment in exchangeable bases and so on caused by irrigation were more remarkable in deep soil layer when treated together with deep ploughing.”
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See all 993 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.