Abstract:

The aim was to explore the effect of grade transplanting of seedlings on yield and growth of Astragalus membranaceus to provide theoretical basis on GAP. The under- and above-ground parts growth was measured and analyzed by using fixed-point follow-up observations. The grade transplanting had great effect on its yield and growth development. The stem size, stem branch and leaf area of big seedlings transplanting were the biggest comparing with other treatments, was 4.84 mm, 14.69, 1723.4 cm2 per plant, respectively. The roots grew fastest in later growth stage when transplanting small seedlings, yielding 13505.85 kg/hm2 and making the best economic benefit 16207.02 yuan/hm2. The growth of medium seedling was the best. Transplanting of small seedlings provided better eco-benefit and more yield, and with its lower cost. The ground part grew better, and conducive to production stay in farming.