A PRELIMINARY STUDY OF MATHEMATICAL MODEL ON DENSITY-PLANTING ECOSYSTEM IN MEDIAN RICE
中稻密植生态系统数学模型的初步研究

The study has been finished on shuang liu farm of the Institute of Biology Chengdu, Academla Sinica.The present paper deals with the ecosystem on Density-Planting patterns for 3×7 5×7 7×7 square cun in median rice. We Assume the system to be linear, and time-invariant, and the same conditions in fertilizer and water. Therefore we get linear time-invariant ecosystem of feedback of single input and single output. The general formula of transfer function and, of each main loop is obtained by systematic block d...