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春麦长到三叶期,每隔3～4天用石磙压一次麦苗,先后共压2～3次,到拔节时止,能收到良好的增产效果。其增产原理可从三个方面说明。
Spring wheat grows to the three-leaf stage, every 3 to 4 days with a stone barb pressure once barley, a total of 2 or 3 times the pressure, until the jointing, can receive a good yield. The principle of yield increase can be explained from three aspects.