Preliminary Study on Forming Available Soil Water (ASW) Stored at Planting in North China by Rainfall During July to September

doi:10.3321/j.issn:1000-7091.2003.02.026

Abstract

Abstract: In this paper, based on the data of available soiLwater ( ASW)stored at planting in 0-50 cm soiLlayer for winter wheat and corresponding rainfalLper 10-days period during July to September at some meteoro-logicaLstations in North China, we analyzed the relationship between the ASW stored at planting for winter wheat and rainfalLunder non-irrigation.We worked out some integraLregression equations to forecast the ASW stored at planting for winter wheat.These equations are also applied to demonstrate the impacts of precipitation per 10-days period during July to September and its temporaLdistribution on forming ASW stored at planting for winter wheat in a region.

Key words: Available soil water ( ASW)stored at planting , Winter wheat , Forecast , Integral regression

CLC Number:

LIU Geng shan, GUO An hong, REN San xue, AN Shun qing, ZHAO Hua rong. Preliminary Study on Forming Available Soil Water (ASW) Stored at Planting in North China by Rainfall During July to September[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 95-98. doi: 10.3321/j.issn:1000-7091.2003.02.026.

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