Abstract
【Objective】 The objective of this study was to identify the responses of nutrient uptake and distribution and yield in maize to soil compaction under different soil types. 【Method】 A two-year barrel-culture experiment was conducted in 2007-2008 with three soil types and two levels of soil compaction on the farm of Henan Agricultural University. The characteristics of nutrient uptake and distribution, and yield in maize were studied. 【Result】 The results showed that root growth was restricted in the three selected soils under soil compaction stress. The maximum root length and dry weight were found in the fluvo-aquic soil while the minmum were observed in the yellow cinnamon soil. The accumulation of N, P, and K uptaken per plant were significantly different among the three selected soils and were the highest in the fluvo-aquic soil, followed by the lime concretion black soil and yellow cinnamon soil. Under the soil compaction circumstances, more nutrients in leaves were transferred to the grains than those in the stems and sheaths. The highest transferring rates of N, P, and K were found in the yellow cinnamon soil, followed by the lime concretion black soil, and the lowest in the fluvo-aquic soil. With the relief of soil compaction, length and dry weight of roots increased significantly in all selected soils, resulting in the increase in the total nutrient uptake per plant and yield. Among the three selected soils, soil compaction had a weaker effect on corn nutrient uptake and yield in the fluvo-aquic soil than in the lime concretion black soil and yellow cinnamon soil. The transferring rates of N, P, and K from vegetative organs to grains increased with increase of soil compaction. 【Conclusion】 Root growth, nutrient uptake and utilization were substantially affected by soil compaction stress, and yield improvement could be obtained by decreasing soil compaction.
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Claims 11
Claim · model-written summary
Soil compaction stress restricted maize root growth in the three selected soils.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e1“root growth was restricted in the three selected soils under soil compaction stress”
Claim · model-written summary
Maximum root length and dry weight of maize were found in the fluvo-aquic soil.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e2“The maximum root length and dry weight were found in the fluvo-aquic soil”
Claim · model-written summary
Minimum root length and dry weight of maize were observed in the yellow cinnamon soil.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e3“The maximum root length and dry weight were found in the fluvo-aquic soil while the minmum were observed in the yellow cinnamon soil”
Claim · model-written summary
Accumulation of N, P and K per maize plant differed significantly among soils and was highest in the fluvo-aquic soil.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e4“The accumulation of N, P, and K uptaken per plant were significantly different among the three selected soils and were the highest in the fluvo-aquic soil”
Claim · model-written summary
Under soil compaction, more nutrients in maize leaves were transferred to the grains than in the stems and sheaths.
- Organ / stage
- leavese5
- Treatment
- soil compaction circumstancese5
- Outcome
- were transferred to the grainse5
- Direction
- moree5
- Comparator
- stems and sheathse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e5“Under the soil compaction circumstances, more nutrients in leaves were transferred to the grains than those in the stems and sheaths”
Claim · model-written summary
Transferring rates of N, P and K were highest in the yellow cinnamon soil.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e6“The highest transferring rates of N, P, and K were found in the yellow cinnamon soil”
Claim · model-written summary
With relief of soil compaction, root length and dry weight of maize increased significantly in all selected soils.
- Organ / stage
- rootse7
- Treatment
- relief of soil compactione7
- Outcome
- length and dry weight of rootse7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e7“With the relief of soil compaction, length and dry weight of roots increased significantly in all selected soils”
Claim · model-written summary
Relief of soil compaction increased total nutrient uptake per plant and yield of maize.
- Treatment
- relief of soil compactione1
- Outcome
- total nutrient uptake per plant and yielde1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e1“With the relief of soil compaction, length and dry weight of roots increased significantly in all selected soils, resulting in the increase in the total nutrient uptake per plant and yield”
Claim · model-written summary
Soil compaction had a weaker effect on maize nutrient uptake and yield in the fluvo-aquic soil than in the lime concretion black and yellow cinnamon soils.
- Treatment
- soil compactione1
- Outcome
- nutrient uptake and yielde1
- Direction
- weakere1
- Qualifier
- fluvo-aquic soile1
- Comparator
- lime concretion black soil and yellow cinnamon soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e1“soil compaction had a weaker effect on corn nutrient uptake and yield in the fluvo-aquic soil than in the lime concretion black soil and yellow cinnamon soil”
Claim · model-written summary
Transferring rates of N, P and K from vegetative organs to grains increased with soil compaction.
- Treatment
- increase of soil compactione1
- Outcome
- transferring rates of N, P, and K from vegetative organs to grainse1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e1“The transferring rates of N, P, and K from vegetative organs to grains increased with increase of soil compaction”
Claim · model-written summary
Yield improvement in maize could be obtained by decreasing soil compaction.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Maize”
e1“yield improvement could be obtained by decreasing soil compaction”
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