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Effects of Fertilization on Seed Yield of Forage Grasses and Their Production Constitutes and the Seed Vigor

Author: GaoPeng
Tutor: ChenBenJian；LiCong
School: Gansu Agricultural University
Course: Grassland
Keywords: E.sibiricus Smooth bromegrass Tall fescue Nitrogen fertilizer Of phosphorus Seed yield Reproductive branches Germination
CLC: S54
Type: Master's thesis
Year: 2009
Downloads: 81
Quote: 0
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Abstract


Field management and technological backwardness lead to lower domestic forage grasses seed yield, seriously affected the application and promotion of forage. To this end, the test system Daejeon seed production of key technologies - nitrogen, phosphorus, potash logistics deal with the impact of Gramineae seed yield and its component factors, seed vigor, to help improve the management of forage grasses for seed production technology system, provide a theoretical basis and technical approach for the production of grass seed industry. Test sibiricus, smooth bromegrass, tall fescue for material fertilization on grass seed yield and its component factors of seed vigor. The main findings are as follows: 1 to E.sibiricus as experimental material, drawn up in the spring and autumn fertilization gradient test results show that the N treatment significant impact on the production of the Old Mans wheat seed, in the Spring and Autumn fractionated nitrogen fertilization 350kg/hm2 (Fall ) seed yield 700/3kg/hm2, Spring 350/3kg/hm2 highest 1059kg/hm2, and the spring of disposable the nitrogen fertilizer 150kg/hm2 production 967kg/hm2, fall disposable of nitrogen fertilizer 150kg/hm2 production 1008kg/hm2 difference was not significant. Drawn by germination test: Spring and Autumn times nitrogen fertilization 250kg/hm2 (Fall 500/3kg/hm2, spring 250/3kg/hm2)-seed germination rate, seedling up to the maximum; Spring graded nitrogen application 350kg/hm2 (Fall 700/3kg/hm2, Spring 350/3kg/hm2) seed vigor index, germination index up to a maximum value. 2 smooth bromegrass test material to study different from nitrogen in the Beijing area, P rates on Bromus wheat seed yield and its form factor. The results show that, under the same irrigation conditions, nitrogen fertilizer Bromus wheat seed yield and its component factors; phosphorus application not significantly influence. Which nitrogen application the highest 664.5kg/hm2 of 150kg/hm2 when the actual seed yield; primary influencing factors Bromus wheat seed yield per unit area of ??reproductive branches, the number of nitrogen fertilization on unit area of ??reproductive branches significantly influence phosphorus impact was not significant which nitrogen application 150kg/hm2, the number of reproductive branches up to 625.5 / ㎡. 3 as test material, tall fescue and tall fescue seed yield, the amount of its constituent factors and seed vigor study of different nitrogen and phosphorus in the Beijing area. The results show that: the nitrogen application on tall fescue seed yield and its components factor greater impact; phosphorus application with the control results were not significant differences. Which nitrogen application 150 kg/hm2 highest seed yield of 1061.11 kg/hm2, seed yield and nitrogen application 200 kg/hm2 1044.44 kg/hm2 difference was not significant. Nitrogen fertilization 150 kg/hm2 seed germination potential, germination index, vigor index were the highest; phosphorus application on seed vigor was not significant.

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