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采用裂区试验设计,密度为主区,品种为副区。在3.0,4.5,6.0,7.5,9.0,10.5万株/hm26个密度下,对昌7-2及其4个遗传改良系和郑单958及4个Reid×塘四平头模式杂交种进行耐密性分析。结果表明:昌7-2和4个遗传改良系中,昌7-53(NC7-53=8.99)和昌7-2(NC7-2=7.82)的耐密性较好,昌7-40(NC7-40=6.45)及昌7-60(NC7-60=4.44)耐密性一般,昌7-83(NC7-83=2.50)的耐密性最差;郑单958及4个Reid×塘四平头强优势模式杂交种中,吉农玉5853(NJNY5853=9.79)和郑单958(NZD958=8.38)的耐密性较好,吉农玉5840(NJNY5840=6.21)耐密性一般,吉农玉5860(NJNY5860=5.55)和吉农玉5883(NJNY5883=5.05)的耐密性较差。昌7-53是改良较成功的自交系,并且由其组配的吉农玉5853具有耐密植的潜力。
Using split test design, the density of the main area, the variety of vice district. Under the density of 3.0,4.5,6.0,7.5,9.0 and 105000 plants / hm26, the tolerance of Chang 7-2 and its four genetic improvement lines and Zhengdan 958 and four Reid × Tongsiping pattern hybrids Sexual analysis. The results showed that in Chang 7-2 and 4 genetic improvement lines, Chang 7-53 (NC7-53 = 8.99) and Chang 7-2 (NC7-2 = 7.82) NC7-40 = 6.45) and Chang 7-60 (NC7-60 = 4.44). The tightness of Chang 7-83 (NC7-83 = 2.50) is the worst. Zhengdan 958 and 4 Reid × Tong The confidentiality of Jining Nongyu 5853 (NJNY5853 = 9.79) and Zhengdan 958 (NZD958 = 8.38) was better than that of Jining Nongyu 5840 (NJNY5840 = 6.21) Jade 5860 (NJNY5860 = 5.55) and Ji Nongyu 5883 (NJNY5883 = 5.05) less dense. Chang 7-53 is a more successful inbred line, and its combination of Jiyong Yu 5853 has the potential of close tolerance.