[Study on mathematical model of optimum fertilizer application to Pinellia ternate cultivation].
OBJECTIVE
To study the mathematical model of optimum fertilizer application to Pinellia by field experiments.


METHODS
Three factors and 5 levels quadratic rotational combination design was applied to study the effects of N, P and K.


CONCLUSIONS
N, P and K combination application can achieve the maximum yield of 29,921.4 kg x hm(-2), the amount of N, P2O5, K2O were 413.79, 224.79, 164.01 kg x hm(-2), respectively. The effects of the 3 factors were in following orders: P > N > K.
Wang
Peng
P
College of Agriculture, Gansu Agricultural University, Lanzhou 730070, China.
Pei
Jianwen
J
Sun
Wanchang
W
Yang
Shaoping
S
Liu
Wenjun
W
Sun
Xinrong
X
D000383:Agriculture / Q000379:methods*; D005308:Fertilizers; D016014:Linear Models; D008954:Models, Biological; D030021:Pinellia / Q000187:drug effects* / Q000254:growth & development*
D005308:Fertilizers