Unit 1 1
Part A Plants 1
Part B WHEAT-Triticum Spp.(Gramineae-Triticinae) 7
Unit 2 11
Part A Botany 11
Part B The Growth of Plants 14
Unit 3 16
Part A Carbon Dioxide Is Nature's Hidden Yield Enhancer 16
Part B Drainage and Irrigation 23
Unit 4 25
Part A Biological Power 25
Part B Ecofarming 30
Unit 5 34
Part A Crop Yields Decline with Topsoil Loss 34
Part B Potato 39
Unit 6 42
Part A Green Revolution 42
Part B Shrinking Wheat Cultivation Area 50
Unit 7 52
Part A Green Gene Technology 52
Part B The Agro-Ecological Zones(AEZ)Methodology 56
Unit 8 63
Part A The Biotech Century 63
Part B Comparison of Different Models for Agriculture 67
Unit 9 69
Part A Crop Yield Estimate Comparison Between Two Methods:Energy Balance and Water Balance 69
Part B Setting Realistic Crop Yield Goals 74
Unit 10 78
Part A Biodiversity and Organic Agriculture 78
Part B Triticum Aestivum L 83
Unit 11 92
Part A Plant Breeding 92
Part B Jumping Genes Make Genetic Leaps 96
Unit 12 99
Part A Food Safety and Quality As Is Affected by Organic Farming 99
Part B Effect of Till and No-Till Soybean Cultivation on Dynamics of Entomopathogenic Fungi in the Soil 106
Unit 13 110
Part A New Wheats Will Help Growers Fight Weeds 110
Part B CIMMYT Wheats Take the Heat 114
Unit 14 116
Part A Induction of Photoperiod Sensitive Genetic Male Steriles for Use in Hybrid Rice Seed Production 116
Part B Rice 121
Unit 15 125
Part A Baby Corn Research Project 1998 125
Part B Corn 134
Unit 16 137
Part A Crop Breeding for Organic Agriculture 137
Part B U.S.Organic Agriculture Introduction 146
Unit 17 150
Part A The Future of Agriculture:Challenges for Environment,Health and Safety Regulation of Pesticides 150
Part B Feeding a World of 10 Billion People:the Miracle Ahead(Ⅰ) 157
Unit 18 165
Part A A Pilot Project on Rapid Estimates of Crop Area Changes from a Scattered Sample of Mini-Sites 165
Part B Feeding a World of 10 Billion People:the Miracle Ahead(Ⅱ) 171
参考译文 178
Key to Exercises 218