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。
Wheat population quality, root system distribution, grain yield and quality were studied under different fertilizer application treatment in the condition of superhighyielding wheat cultivation.
在小麦超高产栽培条件下利用不同施肥量和不同施肥比例的处理，研究了小麦群体质量、根系分布、子粒产量和品质。
Based on the assay of obligate root holoparasites, the article is beneficial for cultivation , exploitation and improve yield and quality.
希望有利于其保护性地栽培、开发利用和提高中药肉苁蓉的产量与质量。
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