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《Journal of Anhui Agricultural Sciences》 2008-08
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Study on the Cultivation Factors Influencing the High Yield of Rape

ZHANG Xiao-rong et al (College of Agronomy, Sichuan Agricultural University, Yaan, Sichuan 625000)  
[Objective]The study aimed to find the cultivation mode, which could enhance the yield and quality of rape and save labour and cost through thoroughly exerting individual advantage and was suitable for large-area planting. [Method]The quadric orthogonal regression rotation combination experiment with 3 factors on the sowing date, density and fertilization (N) of rape variety "HRS-1" was conducted. [Result]The mathematical model between sowing date (X1), density (X2), fertilization (X3) and plot yield (Y) was Y=1 443.45-578.25 X1+642.87 X2+174.94 X3-588.42 X1X2-195.47 X1X3+106.41 X2X3+556.36 X12+99.61 X22+302.36 X32. The influencing degrees of the 3 factors on yield were density sowing date fertilization. The analyses on the interactions between 2 factors showed that as the density increased, the yield of early sowed rape increased and that of late sowed rape decreased; as the fertilization amount increased, the yield of early sowed rape increased and that of late sowed rape decreased. When the rape was sowed in Aug. 29th-Sep. 2nd, its density was 26 130~31 230 plants/hm2 and the fertilization amount (pure N) was 283.8-348.5 kg/hm2, its average yield could reach 3 750 kg/hm2. [Conclusion]The study provided some experimental foundation for enhancing rape yield.
【Fund】: 四川省财政育种攻关青年基金项目
【CateGory Index】: S565.4
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1 LI Ji-qiang ZHAO Xiang-tian JING Peng-yan SONG Zi-ren YUAN Hong-yan LIU Qin(Zhangye Academy of Agricultural Sciences in Gansu Province,Zhangye Gansu 734000);Study on the Hybrid Seed Production Techniques of Spring Brassica Napus in Cool Irrigation Region of Hexi Area[J];;2009-23
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