声明
摘要
Abstract
Tabble of Contents
Abbreviation
Chapter Ⅰ Introduction
1．1 General description
1．2 Vegetable seedling production and cultivation
1．2．1 Status of vegetable seedling productions
1．2．2 Seedling quality criteria
1．2．3 Seedling development
1．2．4 Seedling cultivation
1．3 Growing media
1．3．1 Status of growth media
1．3．2 Substrate quality criterion
1．4 Ebb and flood irrigation
1．4．1 Definition of ebb and flood irrigation
1．4．2 Advantages and disadvantages of ebb and flood irrigation
1．5 Nutrient use efficiency in plant
1．5．1 Definitions and determinations of nutrient use efficiency in crops
1．5．2 Status of nutrient use efficiency
1．5．3 Enhancement of nutrient use efficiency in plants
Chapter Ⅱ Effect of different substrate formulas on growthand development of Solanaceous vegetable seedlings under ebb and flood irrigation
2．1 Abstract
2．2 Introduction
2．3 Materials and methods
2．3．1 Plants，substrates and plug tray types
2．3．2 Treatments and experiment design
2．3．3 Experimental procedures
2．3．4 Determination of chemical and physicai properties of the substrates
2．3．5 Data collection and measurements
2．3．6 Statistical Analysis
2．4 Results
2．4．1 Physical and chemical properties of the substrates
2．4．2 The effects of different substrate formulas on the growth and development of tomato seedlings
2．4．3 The effects of different substrate formulas on the growth and development of pepper seedlings
2．4．4 The effects of different substrate formulas on the growth and development eggplant seedlings
2．5 Discussion
2．5．1 The chemical and physical properties of different substrates
2．5．2 The effects of different substrate formulas on the growth and development of tomato seedlings
2．5．3 The effects of different substrate formulas on the growth and development of pepper seedlings
2．5．4 The effects of different substrate formulas on the growth and development of eggplant seedlings
2．6 Conclusion
Chapter Ⅲ Assessment of nutrient use emciency for Solanaceous vegetable seedlings between overhead irrigation and ebb and flood irrigation
3．1 Abstract
3．2 Introduction
3．3 Materials and methods
3．3．1 Plants，substrates，plug tray types
3．3．2 Treatments and experimental design
3．3．3 Experimental procedures
3．3．4 Determination of seedling vegetable minerals composition
3．3．5 Determination of minerals composition in the substrates
3．3．6 Data collection and measurements
3．3．7 N，P and K use efficiency
3．3．8 N，P and K in the substrates of tomato，pepper and eggplant seedlings at the end of experiment
3．3．9 Statistical Analysis
3．4 Results
3．4．1 The effects of different irrigation methods on the growth and development of tomato seedlings
3．4．2 The effects of different irrigation methods on the growth and development pepper seedlings
3．4．3 The effects of different irrigation methods on the growth and development of eggplant seedlings
3．4．4 Total N，P and K absorption of the tomato，pepper and eggplant seedlings
3．4．5 N，P and K use efficiency
3．4．6 N，P and K in the substrates of tomato，pepper and eggplant seedlings at the end of experiment
3．5 Discussion
3．5．1 The effects of different irrigation methods on the growth and development of tomato seedlings
3．5．2 The effects of different irrigation methods on the growth and development of pepper seedlings
3．5．3 The effects of different irrigation methods on the growth and development of eggplant seedlings
3．5．4 N，P and K absorption of the tomato，pepper and eggplant seedlings
3．5．5 N，P and Kuse efficiency of tomato，pepper and eggplant seedlings
3．5．6 N，P and Kin the substrates of tomato，pepper and eggplant seedlings at the end of experiment
3．6 Conclusion
Chapter Ⅳ Effect of different substrates on growth and development of gourd vegetable seedlings under ebb and flood irrigation
4．1 Abstract
4．2 Introduction
4．3 Material and method
4．3．1 Plants，substrates and plug tray types
4．3．2 Treatments and experimental design
4．3．3 Experimental procedures
4．3．4 Determination of chemical and physical properties of the substrates
4．3．5 Growth parameter data collection and measurement
4．3．6 Statistical analysis
4．4 Results
4．4．1 Physical and chemical properties of the substrates
4．4．2 The effects of different substrate formulas on the growth and development of the cucumber seedlings
4．4．3 The effects of different substrate formulas on the growth and development of the melon seedlings
4．4．4 The effects of different substrate formulas on the growth and development of the watermelon seedlings
4．5 Discussion
4．5．1 Physical properties of different substrate formulas
4．5．2 The effects of different substrate formulas on the growth and development of the cucumber seedlings
4．5．3 The effects of different substrate formulas on the growth and development of the melon seedlings
4．5．4 The effects of different substrate formulas on the growth and development of the watermelon seedlings
4．6 Conclusion
Chapter Ⅴ Estimation of fertilizer use efficiency for Gourd vegetable seedlings between overhead irrigation and ebb and flood irrigation
5．1 Abstract
5．2 Introduction
5．3 Materials and methods
5．3．1 Plants，substrates and plug tray types
5．3．2 Treatments and experimental design
5．3．3 Experimental procedures
5．3．4 Determination of seedling vegetable minerals composition
5．3．5 Determination of minerals composition in the substrates
5．3．6 Growth parameter data collection and measurement
5．3．7 N，P and Kuse efficiency
5．3．8 N，P and K in the substrates in the substrates of cucumber,melon and watermelon seedlings
5．3．9 Statistical Analysis
5．4 Results
5．4．1 The effects of different irrigation methods on the growth and development of cucumber melon and watermelon seedlings
5．4．2 Total N，P and K absorption of the cucumber，melon and watermelon seedlings
5．4．3 N，P and K use efficiency of the cucumber，melon and watermelon seedlings
5．4．4 N，P and K in the substrates of cucumber，melon and watermelon seedlings at the end of experiment
5．5 Discussion
5．5．1 The effects of different irrigation methods on the growth and development ofthe cucumber，melon and watermelon seedlings
5．5．2 Total N，P and K absorption of the cucumber，melon and watermelon seedlings
5．5．3 N，P andK use efficiency of the cucumber，melon and watermelon seedlings
5．5．4 N，P and K in the substrates of cucumber,melon and watermelon seedfings at the end of experiment
5．6 Conclusion
REFERENCE
ACKNOWLEDGEMENTS
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