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前言 花生地膜覆盖栽培的效果在我国虽已肯定,但覆膜的播种适期尚缺乏明确的研究。近年来各地虽然亦作了一些播期试验,而衡量最佳播期的标准均以荚果产量为依据,因而不能真实反应花生生育前期的物候期,播种适期难以掌握。为了明确覆膜播种适期的依据和指标,更好的发挥地膜覆盖的水热效应和充分利用各地光热资源,获取高产稳产,1983～1985年我所牵头的四省市花生地膜覆盖栽培研究课题协作组对花生覆膜播种适期进行了研究。
Preface Peanut film mulching cultivation effect has been confirmed in our country, but the film sowing period is still lack of clear research. In recent years, although some sowing dates have also been made in various places, and the criteria for measuring the best sowing date are based on the pod yield, they can not truly reflect the phenophase of the early stage of peanut growth and the sowing period is difficult to grasp. In order to clarify the basis and indicators of the appropriate period of film sowing, to better exert the hydrothermal effect of mulching film and to make full use of the light and heat resources in various places to obtain high and stable yield, the subject of peanut mulching cultivation in four provinces and municipalities led by me from 1983 to 1985 The cooperative group studied the suitable period of sowing peanut film sowing.