摘要
To get high flower production of tuberose,growing media and NPK fertilizer proportion was determined accurately by polynomial regression quadratic equation (PRQE) in four elements.The partial derivatives from polynomial regression equation ( 6) was utilized for estimating the maximum production of tuberose flower.Results revealed coding level X 1=-1 695, X 2=-1 122 ,X 3=0 311 and X 4=1 151,which are converted into doses of trial factors,are KD-1-Hydrophilic gel/sandy-soil (HG/SS)=0 652%,(NH 4) 2SO 4=14 39 (g·m -3 ),Ca(H 2PO 4) 2·H 2O=25 75 (g·m -3 ) ,and K 2SO 4=25 89 (g·m -3 ).Therefore, max =28 79 (number of flower·m -2 ).Results revealed that plant height was significantly influenced by the application of three major nutrients.However,number of leaves/plant increased non-significantly with the increasing level of NPK and HG/SS.Number of bulks/clump was also influenced by N,P and K as well as HG/SS.Application of higher levels of NPK showed profound effect on increasing flower production (number of spikes·m -2 ),and number of florets/spike.Therefore,higher doses of NPK are recommended for higher production of flower.
To get high flower production of tuberose,growing media and NPK fertilizer proportion was determined accurately by polynomial regression quadratic equation (PRQE) in four elements.The partial derivatives from polynomial regression equation ( 6) was utilized for estimating the maximum production of tuberose flower.Results revealed coding level X 1=-1 695, X 2=-1 122 ,X 3=0 311 and X 4=1 151,which are converted into doses of trial factors,are KD-1-Hydrophilic gel/sandy-soil (HG/SS)=0 652%,(NH 4) 2SO 4=14 39 (g·m -3 ),Ca(H 2PO 4) 2·H 2O=25 75 (g·m -3 ) ,and K 2SO 4=25 89 (g·m -3 ).Therefore, max =28 79 (number of flower·m -2 ).Results revealed that plant height was significantly influenced by the application of three major nutrients.However,number of leaves/plant increased non-significantly with the increasing level of NPK and HG/SS.Number of bulks/clump was also influenced by N,P and K as well as HG/SS.Application of higher levels of NPK showed profound effect on increasing flower production (number of spikes·m -2 ),and number of florets/spike.Therefore,higher doses of NPK are recommended for higher production of flower.
出处
《生态学杂志》
CAS
CSCD
北大核心
2002年第3期21-24,共4页
Chinese Journal of Ecology
基金
山东省教育厅项目资助
