Paddy field 第2页

Effects of different ameliorant measures on the chemical and physical properties of soil in acid sulfate paddy field and rice yield Study of the changes of the rice yield and soil fertility on the paddy field under long-term no-tillage and ridge culture conditions STUDY ON "RICE-AZOLLA-FISH" CROPPING ECOSYSTEM AND EFFICIENCY OF AZOLLA NITROGEN IN THE VALLEY PADDY FIELD OF NORTHERN FUJIAN Effects of Different Paddy Field Drainage Degrees and Panicle Nitrogen Fertilizer Managements on Photosynthetic Productivity and Nitrogen Utilization of Rice under Triangle-Planted System of Rice Intensification