Efficiency of nutrition on productivity, economic effect and fertilizer use coefficient for cucumber and tomato in plastic house in Hanoi - Nghiên cứu phân bón

18
May

Cao Ky Son, Pham Ngoc Tuan, Le Thi Minh Luong

Experiment was conducted with 4 formular of nutrition in plastic house in Hanoi  in  two Autunm-Winter seasons 2007 and 2008. These kinds of  nutrition  were studied and made in the Research Center of Fertilizer and Plant Nutrition. The formular CT4  was selected the best one in  Experiment which brought highest yield of cucumber and tomato. The formular CT4 using nutrition P (content: N-P₂O₅-K₂O = 26-26-26 correlative rate 1:1:1) appplied in the period  from growing to before blossoming, and using nutrition P4 (content: N-P₂O₅ -K₂O = 56-56-113 correlative rate 1:1:2) appplied in the period  from blossoming period to harvesting.

For cucumber, the yield was 112,05 -115,13 tons/ha, gained highest economic efficiency and profit 387.471- 415.769 million VND/ha,  assured safety standard of cucumber. Fertilizer use coefficient : Nitrogen 53.63-55.71%, Phosphorus 34.05 -41.95%,  Potassium 54.24 – 60.55%.

For tomato, the yield was 102,05 – 115,16 tons/ha, gained highest economic efficiency and profit 617.393 – 872.778 million VND/ha,  assured safety standard of tomato. Fertilizer use coefficient : Nitrogen 41.86 – 55.59%, Phosphorus 27.22 -29.40%, Potassium 34.82 – 36.14