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以郑单958为供试品种,通过连续2年的田间试验,研究常规栽培(T1)、高产高效栽培(T2)和对照(CK)3种栽培模式下春玉米干物质积累及转运的变化规律。结果表明:高产高效栽培春玉米单位面积干物质积累量各生育时期均显著高于常规栽培和对照,尤以吐丝后为甚,吐丝后干物质转运量、转移效率和对子粒贡献率均以高产高效栽培最高,各器官表现为叶>茎>穗部。春玉米群体干物质最大积累速率和持续时间均表现为高产高效栽培>常规栽培>对照。最大积累速率出现的时间则与之相反。
Taking Zhengdan958 as tested varieties, the law of dry matter accumulation and translocation in spring maize under three cultivation modes of conventional cultivation (T1), high yield and high efficiency cultivation (T2) and CK was studied through field experiments for two years in a row. . The results showed that the dry matter accumulation per unit area of high-yield and high-efficiency spring maize was significantly higher than that of conventional cultivation and control at each growth stage, especially after silking. The dry matter translocation, transfer efficiency and the contribution rate to grain The highest yield and high efficiency of cultivation, the organs showed leaves> stem> ear. The maximum accumulation rate and duration of dry matter in spring maize showed high yield and high efficiency cultivation> conventional cultivation> control. The maximum rate of accumulation occurs in the opposite direction.