Abstract
Effect of different water and nitrogen input on soil nitrogen balance and movement was studied to provide scientific basis for nitrogen fertilizer application reasonably in muskmelon planting area of irrigated desert oasis. The effects of different irrigation rates( 1500,2100,2700,3300 m3/ ha) and nitrogen rates( N 0,120,240,360 kg / ha) on soil nitrate distribution and accumulation,water and nitrogen uptaked by muskmelon and the yield of melon were studied using a split plot experiment in 2009 and 2010. The results show that after the melon harvest the content of soil nitrate is highest in 0-40 cm soil layer,and has a trend of decreasing first,then increasing,and then decreasing in 0-200 cm soil layer. Under the same irrigation rate,with the increase of N fertilizer rate,the soil NO-3-N contents are increased in 80-120 cm soil layers. The accumulation of soil nitrate is increased with the increase of nitrogen application and decreased with the increase of irrigation rate. There is less than 53% nitrate left in 0- 100 cm soil layer when the irrigation rate is exceeded 2700 m3/ ha. The yield and nitrogen uptake ofmelon are increased with the increases of irrigation rate and nitrogen rate except the treatment of W 2700 N 240. The nitrogen recovery efficiency is decreased with the increase of nitrogen rate. The highest nitrogen harvest index is obtained in the treatment of W 3300 N 360 and the highest water use efficiency is obtained in the treatment of W 1500 N 240. The treatment of W 2700 N 240 not only can sustain the yield of melon,but also can balance the nitrogen uptake and movement,and can get higher yield and efficiency for water and nitrogen input in melon planting area in irrigated desert soil.
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Claims 12
Claim · model-written summary
After melon harvest, soil nitrate content was highest in the 0-40 cm soil layer.
- Taxon
- muskmelon
.jpg?width=60)
Cucumis melot0 - Outcome
- content of soil nitratee1
- Direction
- higheste1
- Qualifier
- 0-40 cm soil layere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“muskmelon”
e1“the content of soil nitrate is highest in 0-40 cm soil layer,and has a trend of decreasing first,then increasing,and then decreasing in 0-200 cm soil layer”
Claim · model-written summary
Soil nitrate content in the 0-200 cm soil layer followed a trend of decreasing, then increasing, then decreasing with depth.
- Taxon
- muskmelonCucumis melot0
- Outcome
- content of soil nitratee1
- Direction
- decreasing first,then increasing,and then decreasinge1
- Qualifier
- 0-200 cm soil layere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“the content of soil nitrate is highest in 0-40 cm soil layer,and has a trend of decreasing first,then increasing,and then decreasing in 0-200 cm soil layer”
Claim · model-written summary
Under the same irrigation rate, higher N fertilizer rates increased soil NO3-N contents in the 80-120 cm soil layers.
- Taxon
- muskmelonCucumis melot0
- Treatment
- N fertilizer ratee1
- Outcome
- soil NO-3-N contentse1
- Direction
- increasede1
- Qualifier
- 80-120 cm soil layerse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“Under the same irrigation rate,with the increase of N fertilizer rate,the soil NO-3-N contents are increased in 80-120 cm soil layers”
Claim · model-written summary
Soil nitrate accumulation increased with increasing nitrogen application.
- Taxon
- muskmelonCucumis melot0
- Treatment
- nitrogen applicatione1
- Outcome
- accumulation of soil nitratee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“The accumulation of soil nitrate is increased with the increase of nitrogen application and decreased with the increase of irrigation rate”
Claim · model-written summary
Soil nitrate accumulation decreased with increasing irrigation rate.
- Taxon
- muskmelonCucumis melot0
- Treatment
- irrigation ratee1
- Outcome
- accumulation of soil nitratee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“The accumulation of soil nitrate is increased with the increase of nitrogen application and decreased with the increase of irrigation rate”
Claim · model-written summary
Less than 53% of nitrate was left in the 0-100 cm soil layer when the irrigation rate exceeded 2700 m3/ha.
- Taxon
- muskmelonCucumis melot0
- Outcome
- nitrate left in 0- 100 cm soil layere1
- Value
- 53%e1
- Qualifier
- irrigation rate is exceeded 2700 m3/ hae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“There is less than 53% nitrate left in 0- 100 cm soil layer when the irrigation rate is exceeded 2700 m3/ ha”
Claim · model-written summary
Melon yield and nitrogen uptake increased with increasing irrigation rate, except in treatment W2700 N240.
- Taxon
- melonCucumis meloe1
- Treatment
- irrigation ratee1
- Outcome
- yield and nitrogen uptakee1
- Direction
- increasede1
- Qualifier
- except the treatment of W 2700 N 240e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The yield and nitrogen uptake ofmelon are increased with the increases of irrigation rate and nitrogen rate except the treatment of W 2700 N 240”
Claim · model-written summary
Melon yield and nitrogen uptake increased with increasing nitrogen rate, except in treatment W2700 N240.
- Taxon
- melonCucumis meloe1
- Treatment
- nitrogen ratee1
- Outcome
- yield and nitrogen uptakee1
- Direction
- increasede1
- Qualifier
- except the treatment of W 2700 N 240e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The yield and nitrogen uptake ofmelon are increased with the increases of irrigation rate and nitrogen rate except the treatment of W 2700 N 240”
Claim · model-written summary
Nitrogen recovery efficiency decreased with increasing nitrogen rate.
- Taxon
- muskmelonCucumis melot0
- Treatment
- nitrogen ratee1
- Outcome
- nitrogen recovery efficiencye1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“The nitrogen recovery efficiency is decreased with the increase of nitrogen rate”
Claim · model-written summary
The highest nitrogen harvest index was obtained in treatment W3300 N360.
- Taxon
- muskmelonCucumis melot0
- Treatment
- W 3300 N 360e1
- Outcome
- highest nitrogen harvest indexe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“The highest nitrogen harvest index is obtained in the treatment of W 3300 N 360”
Claim · model-written summary
The highest water use efficiency was obtained in treatment W1500 N240.
- Taxon
- muskmelonCucumis melot0
- Treatment
- W 1500 N 240e1
- Outcome
- highest water use efficiencye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“the highest water use efficiency is obtained in the treatment of W 1500 N 240”
Claim · model-written summary
Treatment W2700 N240 is recommended because it sustains melon yield while balancing nitrogen uptake and movement.
- Taxon
- melonCucumis meloe1
- Treatment
- W 2700 N 240e1
- Outcome
- sustain the yield of melone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The treatment of W 2700 N 240 not only can sustain the yield of melon,but also can balance the nitrogen uptake and movement”
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22 papers in the same direction as this paper · 5 in the opposite direction
- negative
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See all 28 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.