A field experiment was conducted to study effects ofroot pruning at returning green stage on population structure, soil water and yield formation of winter wheat.
通过田间试验研究了返青期不同程度根修剪处理对冬小麦群体结构、土壤水分及产量形成的影响。
2
The higher oil yield and better quality could be obtained with the root age of 20-24 months.
从根龄20—24个月的香根得到的精油产量最高，质量最好。
3
The quantity of branches and toots are not easily modified coordinately with the quantity ofroot tubers, the quantity of multi-tuber root and the yield per plant.