Abstract
In order to research the appropriate N application levels of Longsang No.1,and support a guide for mulberry peasant,this study was carried out to investigate the effects of different N application levels(0,48.3,96.6,144.9,193.2 and 241.5 kg·hm-2 pure nitrogen) on yield and physiological characteristics of leaf in mulberry in the field,taking Longsang No.1 as experimental material.The results showed that leaf number,branch number,leaf area,leaf mass and leaf yield per plant were increased with nitrogen application level rose from 0 to 193.2 kg·hm-2,while the nitrogen application level was 241.5 kg·hm-2,leaf area,leaf mass and leaf yield per plant reduced.Total nitrogen and total phosphorus contents in leaves of mulberry were increased with nitrogen application level rose from 0 to 144.9 kg·hm-2,but that trend was opposite when nitrogen application level was over 144.9 kg·hm-2,which indicated that higher nitrogen could decrease absorption of N and P.Chlorophyll,soluble proteins and soluble sugar contents in leaves of mulberry were increased with nitrogen application level rose.In sum,based on the effects of N application levels on yield and physiological characteristics of mulberry,the best N application level in the field of Long sang No.1 was from 144.9 kg·hm-2 to 193.2 kg·hm-2.
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Claims 11
Claim · model-written summary
leaf number,branch number increased as nitrogen rose to 193.2 kg·hm-2.
Verbatim
e0“leaf number,branch number,leaf area,leaf mass and leaf yield per plant were increased with nitrogen application level rose from 0 to 193.2 kg·hm-2,while the nitrogen application level was 241.5 kg·hm-2,leaf area,leaf mass and leaf yield per plant reduced”
t0“mulberry”
Claim · model-written summary
leaf area,leaf mass increased as nitrogen rose to 193.2 kg·hm-2.
Verbatim
e0“leaf number,branch number,leaf area,leaf mass and leaf yield per plant were increased with nitrogen application level rose from 0 to 193.2 kg·hm-2,while the nitrogen application level was 241.5 kg·hm-2,leaf area,leaf mass and leaf yield per plant reduced”
t0“mulberry”
Claim · model-written summary
leaf yield per plant increased as nitrogen rose to 193.2 kg·hm-2.
Verbatim
e0“leaf number,branch number,leaf area,leaf mass and leaf yield per plant were increased with nitrogen application level rose from 0 to 193.2 kg·hm-2,while the nitrogen application level was 241.5 kg·hm-2,leaf area,leaf mass and leaf yield per plant reduced”
t0“mulberry”
Claim · model-written summary
leaf area,leaf mass declined at 241.5 kg·hm-2 nitrogen.
Verbatim
e0“leaf number,branch number,leaf area,leaf mass and leaf yield per plant were increased with nitrogen application level rose from 0 to 193.2 kg·hm-2,while the nitrogen application level was 241.5 kg·hm-2,leaf area,leaf mass and leaf yield per plant reduced”
t0“mulberry”
Claim · model-written summary
leaf yield per plant declined at 241.5 kg·hm-2 nitrogen.
Verbatim
e0“leaf number,branch number,leaf area,leaf mass and leaf yield per plant were increased with nitrogen application level rose from 0 to 193.2 kg·hm-2,while the nitrogen application level was 241.5 kg·hm-2,leaf area,leaf mass and leaf yield per plant reduced”
t0“mulberry”
Claim · model-written summary
Total nitrogen content increased up to 144.9 kg·hm-2.
Verbatim
e0“Total nitrogen and total phosphorus contents in leaves of mulberry were increased with nitrogen application level rose from 0 to 144.9 kg·hm-2,but that trend was opposite when nitrogen application level was over 144.9 kg·hm-2”
Claim · model-written summary
total phosphorus content increased up to 144.9 kg·hm-2.
Verbatim
e0“Total nitrogen and total phosphorus contents in leaves of mulberry were increased with nitrogen application level rose from 0 to 144.9 kg·hm-2,but that trend was opposite when nitrogen application level was over 144.9 kg·hm-2”
Claim · model-written summary
Total nitrogen content declined above 144.9 kg·hm-2.
Verbatim
e0“Total nitrogen and total phosphorus contents in leaves of mulberry were increased with nitrogen application level rose from 0 to 144.9 kg·hm-2,but that trend was opposite when nitrogen application level was over 144.9 kg·hm-2”
Claim · model-written summary
total phosphorus content declined above 144.9 kg·hm-2.
Verbatim
e0“Total nitrogen and total phosphorus contents in leaves of mulberry were increased with nitrogen application level rose from 0 to 144.9 kg·hm-2,but that trend was opposite when nitrogen application level was over 144.9 kg·hm-2”
Claim · model-written summary
Leaf chlorophyll, soluble protein, and soluble sugar contents increased with nitrogen application.
- Taxon
- mulberrye0
- Organ / stage
- leavese0
- Treatment
- nitrogen application levele0
- Outcome
- Chlorophyll,soluble proteins and soluble sugar contentse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Chlorophyll,soluble proteins and soluble sugar contents in leaves of mulberry were increased with nitrogen application level rose”
Claim · model-written summary
The recommended field nitrogen application for Long sang No.1 is 144.9 to 193.2 kg·hm-2.
Verbatim
e0“the best N application level in the field of Long sang No.1 was from 144.9 kg·hm-2 to 193.2 kg·hm-2”
t0“mulberry”
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