Abstract
The effect of application sequence and ratio of ammonium and potassium on rape growth and nutrient uptake was studied through rape pot experiment. The results showed that when the mol ratio of NH4+/K+ applied was 1:1, the growth and nutrient uptake of rape were reduced greatly in the treatment with potassium applied after ammonium, which could be attributed to the fixation of ammonium promoted by the later application of potassium. While the mass ratio of K+/NH4+ (about 3:1 in mol ratio), less influence of ammonium and potassium interaction was observed on plant growth and nutrient uptake. The results also showed the importance of proper ratio of N/K for the normal growth of plants.
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Claims 4
Claim · model-written summary
Potassium applied after ammonium at a 1:1 NH4+/K+ mol ratio greatly reduced rape growth and nutrient uptake.
- Taxon
- rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Treatment
- potassium applied after ammoniume1
- Outcome
- growth and nutrient uptakee1
- Direction
- reducede1
- Qualifier
- when the mol ratio of NH4+/K+ applied was 1:1e1
- Setting
- pot experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“The effect of application sequence and ratio of ammonium and potassium on rape growth and nutrient uptake was studied through rape pot experiment”
e1“when the mol ratio of NH4+/K+ applied was 1:1, the growth and nutrient uptake of rape were reduced greatly in the treatment with potassium applied after ammonium”
Claim · model-written summary
The growth reduction is attributed to ammonium fixation promoted by the later potassium application.
- Taxon
- rapeBrassica napuse0
- Outcome
- growth and nutrient uptakee0
- Qualifier
- fixation of ammonium promoted by the later application of potassiume2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of application sequence and ratio of ammonium and potassium on rape growth and nutrient uptake was studied through rape pot experiment”
e2“which could be attributed to the fixation of ammonium promoted by the later application of potassium”
Claim · model-written summary
At a K+/NH4+ mass ratio of about 3:1 (mol), the ammonium-potassium interaction had less influence on rape growth and nutrient uptake.
- Taxon
- rapeBrassica napuse0
- Treatment
- mass ratio of K+/NH4+ (about 3:1 in mol ratio)e3
- Outcome
- influence of ammonium and potassium interactione3
- Direction
- lesse3
- Qualifier
- on plant growth and nutrient uptakee3
- Setting
- pot experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of application sequence and ratio of ammonium and potassium on rape growth and nutrient uptake was studied through rape pot experiment”
e3“While the mass ratio of K+/NH4+ (about 3:1 in mol ratio), less influence of ammonium and potassium interaction was observed on plant growth and nutrient uptake”
Claim · model-written summary
A proper N/K ratio is important for the normal growth of rape.
- Taxon
- rapeBrassica napuse0
- Outcome
- normal growth of plantse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of application sequence and ratio of ammonium and potassium on rape growth and nutrient uptake was studied through rape pot experiment”
e4“The results also showed the importance of proper ratio of N/K for the normal growth of plants”
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