Study on biomass growth law of Paulownia-wheat intercrop-ping on Huanghuaihai Plain of China

An orientation assay of Paulownia-wheatintercropping community in Guantang Township of ShangqiuCounty, Henan Province was made, and the growth Iaw oftree height,trunk diameter and tree crown in intercroppingfields was analyzed.Some Iaws of the change of wheat Pro-duction in the Paulownia-wheat intercropping fields of dif-ferent run and row spacing were also studled.The study hasprovided the basis for planning the structure of arbors,bushesand crops under various ecological environrnental condition inthat region ,and may be used for reference.