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采用裂区试验,以密度和品种为试验因子,研究了11个西南玉米区主推玉米品种产量和主要农艺性状,比较不同品种的耐密性。结果表明:1密度间、品种间、密度与品种互作差异均达极显著水平;2参试品种在高种植密度(6.45万株/hm2)下的平均产量显著高于其在低种植密度(4.95万株/hm2)下的产量,增产10.37%;3依据各品种的增密后的表现将品种分为高产增密增产型、高产增密不增产型、低产增密增产型、低产增密不增产型4个类型。
Using split-plot test and density and variety as test factors, the yield and main agronomic traits of maize varieties in 11 southwest maize areas were studied, and the confidentiality of different varieties was compared. The results showed that there was a significant difference in the interaction among 1 density, variety and density and varieties. The average yield of 2 cultivars under high planting density (64 500 plants / hm2) was significantly higher than that under low planting density 4.95 million plants / hm2), yield 10.37%; 3 According to the performance of the varieties after the densification will be divided into high-yielding varieties of high-yielding, high-yielding not increase production, low-yielding increase production, Not increase the type 4 types.