Chemical Control of Flavone from Forestry Waste C.cathayensis Exocarp on Nutritive Growth of Crops

摘要

Using potted wheat, corn, soybean and mung bean as the materials, the effects of different treatments with six kinds of concentration (0.1 ~ 2.0 / mg.L~(-1)) of flavone extract from C.cathayensis exocarp on the relative electrical conductivity, root activity, nitrate reductase activity and nutritive absorption of four kinds of newborn crop seedlings roots were studied. The results showed that within the range of concentration of 0.1~ 0.5/mg.L~(-1), the flavone extract promoted the nutritive growth of the four kinds of crops at seedling stage. The root activity of the wheat and mung bean seedlings were 0.29 and 0.35/ug.dg~(-1).h~(-1), 40-24% higher than CK, the nitrate reductase activity of the corn and soybean seedlings were 49.9 and 53.1/mg.L~(-1), with an increase of 54-24%. The effects of flavone extract on the four kinds of crop reached the significant or extremely significant level (P < 0.01, P < 0.05). A suitable concentration of flavone extract could significantly promote the root absorption on N, K, Ca, Mg, Fe, Mn, Cu and Zn, but in view of four kinds of crop, the different concentration has different promotive or inhibitive effect. Research results showed that the appropriate concentration of flavone extract from C.cathayensis exocarp could promote the growth of four kinds of crop seedlings, and improve the effect of the mineral nutrient absorption of seedling newborn roots.