ABSTRACT
With Bupleurum smithii var. parvifolium and B. scorzonerifolium as test objects, in order to provide a theoretical basis for the introduction and domestication of B. smithii var. parvifolium, the growth and development dynamics of seedlings, biomass accumulation, the content of malonaldehyde(MDA), the activity of antioxidase such as SOD, POD, CAT and APX between them were comparatively analyzed by direct sowing culture in the open field. The results indicated that the morphological index and the biomass accumulation of B. smithii var. parvifolium such as root diameter, root length, plant height and leaf number were inferior to B. scorzonerifolium, the antioxidase SOD and POD activity of B. smithii var. parvifolium was significantly inferior to B. scorzonerifolium (<0.05), the antioxidase CAT and APX activity of B. smithii var. parvifolium was inferior to B. scorzonerifolium but the difference wasn't significant, while MDA content was superior to B. scorzonerifolium(<0.05). Thus, compared with cultivated B. scorzoneri folium, the plant growth velocity of wild B. smithii var. parvifolium was relatively slower and its resistance was relatively weaker after introduction and domestication.
ABSTRACT
<p><b>OBJECTIVE</b>To study the influence of humic acid fertilizer on plant growth, assimilation base, dried biomass accumulation, yield, quality and disease infection of Angelica sinensis.</p><p><b>METHOD</b>Three kinds of humic acid fertilizer and an amino acid liquid fertilizer were tested in randomized groups at 1 level with 3 times repeat.</p><p><b>RESULT</b>T1 promoted plant and root growth effectively, increased dried biomass accumulation and fresh root average weight remarkably, the yield was increased, the content of ethanol extract was increased by 11.31%. T3 promoted plant and root growth quickly, enlarged leaves area and increased dried plant weight, but effect lasted shortly, the content of ethanol extract was increased by 5.23%. T4 increased more leaves in late growth period, enlarged leaves area, the yield was increased, the content of ethanol extract was increased by 3.09%. T2 increased fresh root average weight remarkably, the yield was increased.</p><p><b>CONCLUSION</b>Humic acid fertilizer and amino acid liquid fertilizer could effectively promote plant growth, enlarge leaves area, promote dried biomass accumulation and transformation to root and increase yield and content of ethanol extract effectively.</p>
Subject(s)
Angelica sinensis , Metabolism , Biomass , Fertilizers , Humic Substances , Plant Leaves , Metabolism , Plant Roots , MetabolismABSTRACT
<p><b>OBJECTIVE</b>To study the growth of Glycyrrhiza uralensis under different planting density for providing theoretic evidence for reasonable planting density.</p><p><b>METHOD</b>The field experiment was designed by single factor randomized block.</p><p><b>RESULT</b>The plant height, root diameter, main root length and branches of main stem were all decreased with increasing planting density of G. uralensis. Meanwhile, dry matter accumulation on root, leaf, aerial part and rhizome were all decreased with increasing planting density.</p><p><b>CONCLUSION</b>Two hundred and seventy thousand plants/hm2 was feasible planting density.</p>
Subject(s)
Forestry , Methods , Glycyrrhiza uralensisABSTRACT
<p><b>OBJECTIVE</b>To study on the dynamic changes of Codnopsis pilosula for the guidance of the field management.</p><p><b>METHOD</b>Using the random method the influences of the cultivating density and fertilizing weight at four different levels was observed.</p><p><b>RESULT AND CONCLUSION</b>The dynamic changes of the biomass, growth period andbiological changes at different growth stages were found out. The most predominant combination of the two factors, the 1.05 million roots/hm2 of the cultivating density and 240 kg x hm(-2) of the fertilizing weight reached the highest accumulation of stems & leaves; 652 mg x d(-1) the 0.6 million roots/hm2 and 240 kg x hm(-2) reached the heaviest single fresh root. The results could be used for the cultivating, fertilizing and practicing SOP of C. pilosula.</p>