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Keyword [double cropping system]
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1. Study On Mode And Technique Of Two Harvests Silage Maize In The Temperature Limited Region Of Double Cropping System
2. Effects Of Tillage And Cultivation On Cropland Eco-environment And Yearly Productivity In A Wheat-rice Double Cropping System
3. Study On Super-high Yield Formational Characteristics And Key Techniques Of Precise And Quantitative Cultivation Of Early Rice In The Double-cropping System In The Middle Reaches Of The Yangtze River
4. Study On Planting Arrangement Of Double-Cropping System For Wheat And Summer-Corn And Its Techno-Economic Effectiveness
5. Study On The Potential Productivity,Comparative Efficiency And Rational Intensity Of Winter Wheat——Maize Double Cropping System In Hebei
6. Simulation Of Water And Nitrogen Behavior And Their Effects On Yield And Sustainability Of Wheat-Maize Double Cropping System
7. Studies On Characteristics Of Cotton Root Physiology And Rhizosphere Micro-ecology In Colony Of High Yielded Cotton-wheat Double Cropping System
8. Leaching Loss And Movement Of Nitrate In The Soil Of Wheat-Corn Double Cropping System And Nitrogen And Irrigation Recommendation
9. Study On Sustainable Nutrient Management In Wheat-Maize Double Cropping System
10. Effects Of Distribution Patterns Of Nitrogen Fertilizer On Yield, Quality And Nitrogen Uptake Of Rice In Double-Cropping System
11. Integrative Benefit Evaluation To A Highly Efficient Technique System Of Wheat-Maize Double Cropping System
12. A Comparative Study On Ecoligical And Economical Effects Of Wheat-based Double Cropping System In Hebei Plain
13. Study Of Water Effect In Double Cropping System On Dry-Farming Lands In Subhumid Regions Of Loess Plateau
14. Effects Of Tillage And Cultivation On Wheat-Rice Productivity In A Wheat-Rice Double Cropping System
15. Research On Conservation Tillage And Fertilization Under Wheat-maize Double Cropping System In North China Plain
16. Effects Of Different Fertilization Methods On The Content Of Soil Nutrients And Nutrients Uptake And Utilizations In Double Cropping System Of Wheat And Maize In Chao Soil
17. Study On Water Effect Of Double Cropping Of Dry Farmland In The Subhumid Area Of Loess Plateau
18. Study On The Effects Of Straw Returning To Soil In High-yield Rice-wheat Double Cropping System
19. Effects Of Long-term Fertilization On Crop Photosynthesis And Protective Enzyme Activities Under Wheat-maize Double-cropping System
20. Establishment Of Potato-Including Double Cropping System At Hetao Irrigated Area And The Evaluation Of Its Resources Use Efficiencies
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