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8种作物11种轮作方式3年研究结果表明,在连续干旱和严重干旱气候条件下,一年两熟的3种轮作方式减产54.65%~66.61%;二年三熟、三年四熟和一年一熟轮作方式产量高且稳定。以3年轮作期产量、产值、净产值和产投比衡量,一年一熟制轮作方式以小麦→小麦→油菜为好。三年四熟制轮作方式以小麦—绿豆→烟草→春玉米和小麦—大豆→春玉米→扁豆较好。
The results of three-year study on 11 cropping patterns of 8 crops showed that under the continuous drought and severe arid climatic conditions, the three cropping patterns of double cropping in one year decreased by 54.65% ~ 66.61%; the second crop three-cropping and three-year Four-cropping and one-crop rotation in one year yield high and stable. According to the output of 3-year crop rotation, output value, net output value and output-to-output ratio, it is better to use wheat → wheat → rapeseed in a rotation mode of one year. Three-year rotation of four-crop system to wheat - green beans → tobacco → spring corn and wheat - soybeans → spring corn → lentils better.