Effects of Different Cultivation Practices on the Amount of Seeds in the Soils and Seed Production of Cenchrus pauciflorus Bent

• Published in: Journal of agricultural resources and environment 2015-01, Vol.32 (3), p.312
• Main Authors: Yan-Lei, Zhang, Rui-Hai, Zhang, Wei-Dong, Fu, Song, Zhen, Han-Wen, Ni, Guo-Liang, Zhang
• Format: Article
• Language: Chinese
• Subjects: Agricultural land; Biodiversity; Cenchrus pauciflorus; Corn; Crop rotation; Cultivation; Dryland farming; Fertilization; Fertilizer application; Fertilizers; Grasslands; Helianthus annuus; Helianthus tuberosus; Herbicides; Irrigation; Irrigation water; Moisture content; Mowing; Nonnative species; Pasture; Science; Seeds; Soils; Water content; Weeds
• ISSN: 2095-6819; 2095-6819
• DOI: 10.13254/j.jare.2015.0040

In the present study, the amount of Cenchrus pauciflorus Benth seeds in the soils of natural grassland and farmland was measured. The effects of fertilization, irrigation, plant-mowing and using replacement plant species on C. pauciflorus were analyzed. From seeds of pasture and dry farmland soils, a total number of 25 plant species were identified, which fell into 24 genera of 12 families. The number of seeds of C. pauciflorus per square meter reached 12 923 in natural pasture soils and 8 960 in dry farming soils, which was 67.72% and 79.74% of the total seeds, respectively, from the two types of soils. In dry natural pasture soils, the seeds of C. pauciflorus were mainly distributed on the top 0~2.0 cm layer, being 45.71% of the total seeds. In dry farmland soils, however, the numbers of C. pauciflorus seeds were not significantly different on the 0~2.0, 2.0~5.0 cm and 5.0~10.0 cm layers (P>0.05). Experiments showed that seed production increased significantly at the low-dosage of fertilizer application (P