Abstract
Sorghum hybrid was used to investigate the effect of different nitrogen levels on performance and nitrogen residues in soil.Based on the randomized block design,five nitrogen levels of N0(0 kg/hm2),N90(90 kg/hm2),N180(180 kg/hm2),N270(270 kg/hm2) and N360(360 kg/hm2) were designed.The results showed that ①nitrogen fertilizer could increase the fresh yield,and in N360 treatment the yield of 151 878 kg/hm2 was harvested;②With the increase of fertilizing nitrogen,the production efficiency of dry matter and crude protein was decreased.The highest nitrogen utilization efficiency of Sorghum hybrid was shown in N270 treatment,which was 39.34% higher than that in N360 treatment;③Soil nitrogen was mainly located in soil profile(0-60 cm).With the increase of fertilizing nitrogen,nitrogen residues were increased,especially in the first harvest.The nitrogen residues greatly decreased in the second harvest.
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Claims 7
Claim · model-written summary
Nitrogen fertilizer increased the fresh yield of sorghum hybrid.
Not reportedComparator
Verbatim
e0“nitrogen fertilizer could increase the fresh yield”
e7“Sorghum hybrid was used to investigate the effect of different nitrogen levels”
Claim · model-written summary
In the N360 treatment a fresh yield of 151 878 kg/hm2 was harvested.
Verbatim
e0“in N360 treatment the yield of 151 878 kg/hm2 was harvested”
e7“Sorghum hybrid was used to investigate the effect of different nitrogen levels”
Claim · model-written summary
Production efficiency of dry matter and crude protein decreased as fertilizing nitrogen increased.
- Taxon
- Sorghum hybride7
- Treatment
- increase of fertilizing nitrogene0
- Outcome
- production efficiency of dry matter and crude proteine0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“With the increase of fertilizing nitrogen,the production efficiency of dry matter and crude protein was decreased”
e7“Sorghum hybrid was used to investigate the effect of different nitrogen levels”
Claim · model-written summary
Nitrogen utilization efficiency was highest in N270, 39.34% higher than in N360.
Verbatim
e0“The highest nitrogen utilization efficiency of Sorghum hybrid was shown in N270 treatment,which was 39.34% higher than that in N360 treatment”
Claim · model-written summary
Soil nitrogen was mainly located in the 0-60 cm soil profile.
Verbatim
e0“Soil nitrogen was mainly located in soil profile(0-60 cm)”
e7“Sorghum hybrid was used to investigate the effect of different nitrogen levels”
Claim · model-written summary
Soil nitrogen residues increased with fertilizing nitrogen, especially in the first harvest.
- Taxon
- Sorghum hybride7
- Treatment
- increase of fertilizing nitrogene0
- Outcome
- nitrogen residuese0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“With the increase of fertilizing nitrogen,nitrogen residues were increased,especially in the first harvest”
e7“Sorghum hybrid was used to investigate the effect of different nitrogen levels”
Claim · model-written summary
Nitrogen residues decreased greatly in the second harvest.
Verbatim
e0“The nitrogen residues greatly decreased in the second harvest”
e7“Sorghum hybrid was used to investigate the effect of different nitrogen levels”
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