Effect of Water and Fertilizer on Plant Community Diversity and Productivity in Leymus chinensis Mowing Meadow in Horqin

doi:10.11924/j.issn.1000-6850.casb17060122

Abstract

Abstract: [Objective][Method] The experiment was designed with random blocks, and discussed the effects of different applied time and level of water and fertilizer coupling on productivity, community characteristics and species diversity of Leymus chinensis mowing pasture in Horqin. [Result] The result showed that the community height, coverage, density and aboveground biomass significantly increased in the level 15 mm and 150 kg/hm2 (15N) in 15th June and 30th May, and the aboveground biomass was double compared with control. Water and fertilizer coupling was decreased the plant species diversity, and the community Margalef diversity index, Shannon-Weiner diversity index, and Simpson dominance index significantly decreased in 15N of 15th May(P＜0.05). [Conclusion] In conclusion, the optimal improvement time, level of water and fertilizer coupling should be later 30th May, 15N can be respectively recommended in Leymus chinensis mowing pasture in Horqin.

CLC Number:

S812

References

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