Journal of Food, Agriculture and Environment

Effect of long-term fertilization on wheat productivity and soil properties in the Northern Loess Plateau, China

Author(s):

 Wenjun Li ¹, Mingde Hao ^{1*, 2}, Xiaoyan He ²

Recieved Date: 2013-05-10, Accepted Date: 2013-10-28

Abstract:

Fertilization is important for the production of wheat in the rain-fed region of the Loess Plateau. We evaluated different treatments of fertilizer application to determine the effects of long-term fertilization (1984 to 2010) on wheat production and soil properties at the Changwu State Key Agro-Ecological Experimental Station on the Loess Plateau. Experimental plots (10.26 x 6.5 m²) were randomly arranged in a complete block design with three replicates. Eight treatments were chosen for the present study: (1) CK (no fertilizer), (2) N (120 kg N ha^-1), (3) P (26.2 kg P ha^-1), (4) NP (120 kg N ha^-1 and 26.2 kg P ha^-1), (5) M (75 t manure ha^-1), (6) NM (120 kg N ha^-1 and 75 t manure ha^-1), (7) PM (26.2 kg P ha^-1 and 75 t manure ha^-1) and (8) NPM (120 kg N ha^-1, 26.2 kg P ha^-1, and 75 t manure ha^-1). The average concentrations of organic matter, total N, total P, AP and AK in the manure were 18.0 g, 1.2 g, 2.4 g, 109.3 mg and 3.6 g kg^-1, respectively. Soil samples were collected in mid-September 2011. Wheat yields were higher with fertilization treatments than without, except for applied phosphorus (P). The application of manure (M) not only significantly increased wheat yields but also increased the contents of soil organic matter, total nitrogen (N), total P, and the availability of soil P and potassium (K). Fallow-season precipitation was significantly correlated with N, PM, NM, NP and NPM treatments. The application of manure and the soil water stored from fallow-season precipitation were important for the improvement of soil nutrients and for sustainable wheat production in the rain-fed region of the Loess Plateau.

Keywords:

Continuous wheat, long-term fertilization, wheat production, soil properties, rain-fed agricultural region

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Agriculture
Pages: 1448-1453

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