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。
The distribution position of cotton root system in the tilth is closely related with cotton yield.
棉花根系在耕层分布的位置与产量密切相关。
On the condition of dryland, bleeding SAP of different potato strains was determined to reflect the absorption vitality of root system, and the biological yield and tuber yield were also measured.
在旱地田间条件下,通过测定不同品系马铃薯伤流液的多少以反映根系吸收活力的大小,同时测定相应的生物产量和块茎产量。
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