Abstract
[Objective]The research aimed to study the effects of different ratio of NPK on the yield of potato intercropped with sugarcane in Lateritic red earth area of Guangxi,and seek the best NPK ratio for nutrition of potato intercropped with sugarcane.[Method] Two field experiments which were adopted the optimization compound design(311-A) were conducted in 2011 and 2012,respectively,on Long'an county,Guangxi.The polynomial regression models of fertilizer application and quadratic of three factors were established by SAS statistical analysis software,and optimum nutrient simulation models of potato were obtained by computer processing.[Result]The combined application of low nitrogen and mid-high potassium and phosphorus fertilizer contributed to higher potato yield in the experimental condition.The regression model of the potato yield(Y11 and Y12) and the amount of N(X1),P(X2),K(X2) were established by SAS statistical analysis software,in 2011 and 2012,respectively.They were Y11=14 725.28-415.39X1+741.99X2+607.83X3-447.92X1X2-144.09X1X3-405.83X2X3-267.82X21-795.67X22-642.10X23,R=0.927 2 and Y12=14 342.60-896.25X1+548.62X2+925.51X3+67.81X1X2+531.60X1X3-99.00X2X3-904.00X21-1 121.36X22-596.64X23,R=0.926 6.The regression mathematics model of potato yields were better fitting with actual situation in the locality,and had higher practical value,so it could be used for fertilizer decision and forecast.Using the computer to carry on the optimization,the NPK dosage of the best potato yield intercropped with sugarcane was obtained.The dosage of N,P2O5,K2O were 108.8-140.6,172.5-204.4 and 285.9 kg/hm2,respectively.[Conclusion]The best NPK ratio of potato yield intercropped with sugarcane was 1∶(1.23-1.88)∶(2.03-2.63).
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Claims 6
Claim · model-written summary
Combined low nitrogen with mid-high potassium and phosphorus fertilizer gave higher potato yield.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- combined application of low nitrogen and mid-high potassium and phosphorus fertilizere1
- Outcome
- potato yielde1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Intercropped with Sugarcane”
e1“The combined application of low nitrogen and mid-high potassium and phosphorus fertilizer contributed to higher potato yield”
Claim · model-written summary
The regression mathematics model of potato yield fitted the actual local situation better.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- better fittinge5
- Comparator
- actual situation in the localitye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Intercropped with Sugarcane”
e5“The regression mathematics model of potato yields were better fitting with actual situation in the locality”
Claim · model-written summary
The regression model of potato yield in 2011 had R = 0.927 2.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- the amount of N(X1),P(X2),K(X2)e2
- Outcome
- regression model of the potato yielde2
- Value
- R=0.927 2e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Intercropped with Sugarcane”
e2“The regression model of the potato yield(Y11 and Y12) and the amount of N(X1),P(X2),K(X2) were established”
e3“R=0.927 2 and Y12”
Claim · model-written summary
The regression model of potato yield in 2012 had R = 0.926 6.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- the amount of N(X1),P(X2),K(X2)e2
- Outcome
- regression model of the potato yielde2
- Value
- R=0.926 6e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Intercropped with Sugarcane”
e2“The regression model of the potato yield(Y11 and Y12) and the amount of N(X1),P(X2),K(X2) were established”
e4“R=0.926 6”
Claim · model-written summary
The optimized NPK dosage for the best potato yield intercropped with sugarcane was N 108.8-140.6, P2O5 172.5-204.4 and K2O 285.9 kg/hm2.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- NPK dosage of the best potato yield intercropped with sugarcanee7
- Value
- 108.8-140.6,172.5-204.4 and 285.9 kg/hm2e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Intercropped with Sugarcane”
e6“The dosage of N,P2O5,K2O were 108.8-140.6,172.5-204.4 and 285.9 kg/hm2”
e7“the NPK dosage of the best potato yield intercropped with sugarcane was obtained”
Claim · model-written summary
The best NPK ratio for potato yield intercropped with sugarcane was 1:(1.23-1.88):(2.03-2.63).
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- best NPK ratio of potato yield intercropped with sugarcanee1
- Value
- 1∶(1.23-1.88)∶(2.03-2.63)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Intercropped with Sugarcane”
e1“The best NPK ratio of potato yield intercropped with sugarcane was 1∶(1.23-1.88)∶(2.03-2.63)”
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