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- W2370127646 abstract "The weed seedbank in the lime concretion black soil(0-15 cm) of a long-term fertilizer experiment was surveyed.We analyzed its density,species composition and biodiversity in relation to fertilization patterns and the rate of community succession under wheat-soybean rotation.The results showed the fertilization patterns significantly affected the density,species composition,biodiversity features and the rate of community succession of weeds.All the weed seeds affiliated with eighteen species and eleven families,and the dominant species differed remarkably from one treatment to another.The density of soil weed seedbank decreased significantly(P0.01) in a sequence of NPKNPNKCKPK.Due to the fertilizer treatment effects,the diversity of the weed seedbank species in the soil decreased in the following orders: CKNPKPK=NKNP for the species number,NPCKNKPK NPK for the Pielou index,CKNPNKPKNPK for Shannon-Wiener index and NPKPK=NKCKNP for the Simpson index.Our preliminary results revealed that adaptation of and competition between different weed species may lead to the varied species composition and density,and changes in dominant weed species caused by different fertilizer treatments were particularly prominent.This resulted in more heterogeneity and biodiversity of weed seedbank in the soil.The increased sequence for the Whittaker index as CKNPKPK=NKNP demonstrated a speeding-up rate of community succession,implying that the long-term balanced fertilization(NPK) balanced fertilization had less effect on soil weed seedbank than the PK,NP or NK but yielded a more stable seedbank structure.The variation in soil weed seedbank species may be caused by changes in climate,sampling time,herbicide use,cropping seasons and years.The results suggested that the long-term balanced fertilization is very beneficial to producing high yield and quality of agricultural products and stabilizing the soil weed seedbank,and is also an important measure to create reasonable,efficient and stable agro-ecosystem for better economic performance and ecosystem benefits." @default.
- W2370127646 created "2016-06-24" @default.
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- W2370127646 date "2012-01-01" @default.
- W2370127646 modified "2023-09-23" @default.
- W2370127646 title "Effect of fertilization patterns on weed seedbank in lime concretion black soils" @default.
- W2370127646 hasPublicationYear "2012" @default.
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