title: [Effect of rice-duck mutualism on nutrition ecology of paddy field and rice quality].
abstract: The production of nuisanceless rice was conducted by the technique of rice-duck mutualism without applying any pesticide and chemical fertilizer. The results showed that compared to the control, the effect of eliminating weeds was over 99.4%, and the cardinal numbers of plant diseases and insect pests reduced obviously. Nutrients and dissolved oxygen in paddy water and rapidly available nutrients in soil increased, but after maturing stage, compared to basal fertility, rapidly available P and K decreased. The N, P, and K absorption amounts of rice plant, rice yield, setting panicles rate, filled grains and ripened rate increased. The milling, appearance, nutritional, cooking and eating quality of rice improved, especially in reducing chalkiness. The comprehensive benefits of paddy field enhanced obviously.
authors.affiliation: Crop Growth Regulation, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China. qswang@njau.edu.cn
authors.forename: Qiangsheng
authors.initials: Q
authors.lastname: Wang
authors.forename: Pisheng
authors.initials: P
authors.lastname: Huang
authors.forename: Ruohong
authors.initials: R
authors.lastname: Zhen
authors.forename: Liuming
authors.initials: L
authors.lastname: Jing
authors.forename: Hebao
authors.initials: H
authors.lastname: Tang
authors.forename: Chunyang
authors.initials: C
authors.lastname: Zhang
mesh_terms: D000818:Animals; D004372:Ducks / Q000254:growth & development* / Q000502:physiology; D017753:Ecosystem; D007313:Insecta / Q000502:physiology; D009584:Nitrogen / Q000032:analysis; D012275:Oryza / Q000254:growth & development* / Q000378:metabolism / Q000469:parasitology; D010710:Phosphates / Q000032:analysis; D010935:Plant Diseases / Q000469:parasitology; D011188:Potassium / Q000032:analysis; D012987:Soil / Q000032:analysis*; D013997:Time Factors; D014867:Water / Q000032:analysis
chemical_list: D010710:Phosphates; D012987:Soil; D014867:Water; D009584:Nitrogen; D011188:Potassium