title: [Dynamics simulation on plant growth, N accumulation and utilization of processing tomato at different N fertilization rates].
abstract: Three field experiments were conducted to simulate the dynamics of aboveground biomass, N accumulation and utilization of drip-irrigated processing tomatoes at different N fertilization rates (0, 75, 150, 300, 450, or 600 kg x hm(-2)). The results showed that Logistic models best described the changes in aboveground biomass, N accumulation, and utilization of accumulated N efficiency with the physiological development time (PDT). Rapid accumulation of N began about 4-6 d (PDT) earlier than the rapid accumulation of aboveground biomass. The momentary utilization rate of N (NMUR) increased after emergence, reached a single peak, and then decreased. The N accumulation, aboveground biomass and yield were highest in the 300 kg x hm(-2) treatment. The quadratic model indicated that application rate of 349 to 382 kg N x hm(-2) was optimum for drip-irrigated processing tomatoes in northern Xinjiang.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.forename: Fu-Yu
authors.initials: FY
authors.lastname: Ma
authors.forename: Ming
authors.initials: M
authors.lastname: Diao
authors.forename: Huam
authors.initials: H
authors.lastname: Fan
authors.forename: Jing
authors.initials: J
authors.lastname: Cui
authors.forename: Biao
authors.initials: B
authors.lastname: Jia
authors.forename: Hai-Bing
authors.initials: HB
authors.lastname: He
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
mesh_terms: D000383:Agriculture / Q000379:methods; D018533:Biomass; D005308:Fertilizers; D016015:Logistic Models; D018551:Solanum lycopersicum / Q000254:growth & development* / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*
chemical_list: D005308:Fertilizers; D009584:Nitrogen