Effects of Different Culture Medium on Moringa Seedling Growth and Correlation analysis in Northern China
XU Hai-Jun, CHENG Xin-Yu, WANG Xiao-Fei, SUN Yu-Feng
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We investigated the effects of different cultivation medium on seedling growth of Moringa oleifera Lam., PKM1 and PKM2 under the facilities in northern China, the plant height, base diameter, anatomical shape character, and analyzed relationship between cultivation medium and growth of Moringa seedling. The results showed that peat+sand+rotten mushrooms base material(3:1:1, T2) was better fit for Moringa seedling growth than the other three treatments which are perlite+garden soil+humus(1:2:1, T1), garden soil+humus+peat+sand(2:1:1:1, T3) and garden soil(CK). The contents of organic matter, porosity, and unit weight in T2 substrate are 49.97 g·kg-1, 76.84%, and 0.58 g·cm-3, respectively. The available N, P, K in T2 are significantly higher than other treatments(P<0.05). The growth speed of Moringa seedling in T2 substrate are significantly faster than other treatments. After 71-day planting, the plant height of M.oleifera, PKM1 and PKM2 are 80.2, 115.67, and 81.0 cm, respectively, increased by 38.3%, 25.7%, and 28.6% more than T4(CK), respectively, and the base diameter are 13.27, 17.47, and 15.08 mm, respectively, increased by 32.0%, 14.6%, and 39.0% more than T4(CK), respectively. The aboveground part of seedling grows rapidly under T2 treatment. After 60-day culture, the skin of seedling under T2 is completely dead and broken up. The phloem fiber and xylem are the most developed among four treatments. So relationship between eight vector factors of substrate and plant height, base diameter were analyzed, the result indicate that the cultivation medium which contain high content of organic matter, with capacity of permeability and water retention is more suitable for the growth of Moringa seedling. The factors which are significantly correlative to growth of Moringa seedling are organic matter, available potassium, moisture content, porosity, bulk density, N and P(P<0.05).