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为确定淮北平原小麦生长期的适宜地下水位控制埋深,以2011~2013年淮北平原五道沟试验站实测资料为例,选取控制埋深为0.2、0.4、0.6、0.8、1.0、1.5、2.0m的全部装有砂礓黑土的测筒21只,每个埋深处理重复三次,分两期进行不同地下水位控制埋深对小麦产量影响的试验,通过控制测筒内地下水位埋深,比较不同地下水位埋深对小麦产量和构成的影响。结果表明,2.0m埋深以内,地下水位埋深与小麦产量显著相关,且用二次曲线可很好地拟合,小麦产量最高处对应的地下水位埋深约为1.3m。从产量构成的角度来看,小麦的株高、穗长和亩穗数均随地下水位埋深变化而差异显著,且2.0m埋深以内地下水位埋深与小麦产量之间呈现先增大后减小的关系。
In order to determine the appropriate groundwater level control during the growing season of wheat in Huaibei Plain, taking the measured data of Wudaogou Experimental Station in Huaibei Plain from 2011 to 2013 as an example, the control depth of buried depth of 0.2,0.4,0.6,0.8,1.0,1.5,2.0 m all equipped with sand and clay black soil 21, each buried depth treatment repeated three times in two phases of groundwater depth control of different depths of wheat yield test, by controlling the depth of groundwater table in the barrel, the comparison Effect of Buried Depth of Different Groundwater Levels on Wheat Yield and Its Composition. The results show that the depth of groundwater table is significantly correlated with the yield of wheat within the depth of 2.0m and can be fitted well by the quadratic curve. The corresponding groundwater table with the highest yield of wheat is about 1.3m. From the standpoint of yield composition, the plant height, spike length and number of ears of wheat varied significantly with the depth of groundwater table, and the depth of groundwater table and wheat yield increased first after the depth of 2.0m Reduced relationship.