Preliminary study on the formation of litters in Leymus chinesis grassland in Songnen plain

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cje ›› 1990, Vol. ›› Issue (1): 11-14.

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Preliminary study on the formation of litters in Leymus chinesis grassland in Songnen plain

Guo Jixun

Grassland Research Institute of Northeast Normal University

Received:1988-03-10 Revised:1988-06-03 Online:1990-02-10

Abstract

Abstract: This paper reports a preliminary study on the patterns of litter formation in Leymus chine-sis grassland in Songnen plain.The mortality process of Leymus chinesis is observed,itsmortality rates in different seasons are calculated,and the mathematical models of litterproduction are constructed.The gross quantity of litter is determined as 145.5g穖^-2,whichequals to the sum of annual production of litter and its weight losses during the period.

Key words: Rice, Nitrogen fertilizer, Nitrogen utilization efficiency

Guo Jixun. Preliminary study on the formation of litters in Leymus chinesis grassland in Songnen plain[J]. cje, 1990, (1): 11-14.

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Preliminary study on the formation of litters in Leymus chinesis grassland in Songnen plain

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