Results from some high yield regions showed that ratio of output to input grows up with application rate of organic manure (Guiying, 1991), taking results of Qinrulin village, Anqou county, for example (Table 6.).
Results from some high yield regions showed that ratio of output to input grows up with application rate of organic manure (Guiying, 1991), taking results of Qinrulin village, Anqou county, for example (Table 6.).
一些高产地区的结果表明随着有机肥用量增加，产投比上升，以安丘县前儒林村结果为例（表6）。