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[1]CHEN Wei,DENG Xi-ping,NIE Zhao-juan,et al.The Grain-filling Characteristics and Yield Components of Two Wheat Varieties under Different Cultivating Models[J].Research of Soil and Water Conservation,2010,17(03):240-244.

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The Grain-filling Characteristics and Yield Components of Two Wheat Varieties under Different Cultivating Models

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 03 Page number: 240-244 Column: Public date: 2010-06-20

Title:: The Grain-filling Characteristics and Yield Components of Two Wheat Varieties under Different Cultivating Models

Author(s):: CHEN Wei, DENG Xi-ping, NIE Zhao-juan, CHEN Yu-hua; State Key Laboratory of Soil Erosion and Dryland Faming on Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China

Keywords:: wheat cultivars; dry-land areas of the Loess Plateau; grain filling characteristics

CLC:: S512.11;S311

DOI:: -

Abstract:: A field experiment was conducted in the dryland areas of the Loess Plateau. The two wheat varieties (changwu134 and changhan58) planting popularly in this area were as the material. The objectives of the study were to explore the relationships among the grain-filling characteristics, the stay green of flag leaf and grain yields under different cultivating models and analysis the components of the yield. Results showed that the kernel weight of winter wheat was positive correlated with T_d (the days of whole grain filling), with V_a (the average rate of whole grain filling), with T₁ (the days of grain filling of gradual growth), with T₂ (the days of grain filling fast growth period), with Rmax (the maximum rate of the whole grain filling) at 0.01 significant level. Compared the contents of total chlorophyll in flag leaves under different cultivating models, it showed that: using organic manure could increase the days of grain filling, the kernel weight, the WUE (water use efficiency), the HI (harvest index) and the yield, respectively. The averages of 1000-grain weight, the yield and the WUE were increased by 7.527%, 10.74%and 23.85% comparing with that of only use fertilizer. The kernel weight is the main factor that causes the yield differences.

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