double plough
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- egg character
- colitis
- abortive transduction
- Reducing substances
- achromatic figure
- Open cultivation
- antracole
- fertilization time
- in vitro digestibility
- autumn planting
- shoot harvesting
- water supplying system
- ecological climatology，ecoclimatology
- TCA cycle
- euryphagous,polytrophic
- long pistillate
- first half period of growth
- excreta of accessory sex gland
- intensive farming method
- Soil surface mulching