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1998～ 1 999年度 ,在陕西永寿油菜科学试验基地 ,以露地沟播油菜为对照 ,就旱地油菜膜上穴播 ,膜侧沟播和膜内沟播 3种栽培方式的增产机理和生长发育状况进行了深入研究。结果表明 ,膜上穴播、膜侧沟播和膜内沟播在油菜越冬前至抽苔时期均有较好的增温效果 ,在油菜苗期生长发育阶段 ,均能有效地改善田间蓄水和供水的关系 ,提高油菜对水分的利用率。 3种覆膜栽培方式能较好地协调油菜产量三要素 ,使角果数、粒数和千粒重均优于对照。不同区域可根据不同模式的优缺点分别选择应用
From 1998 to 1999, in the experiment of rapeseed science in Yongshou of Shaanxi Province, compared with the open-field rapeseed cultivation, the yield-increasing mechanism and the growth and development of three rape cultivars on dry rapeseed, In-depth study. The results showed that there was a good warming effect on the filming, film-sowing and film mulching before rapeseed winter to bolting stage. During rapeseed rapeseed growth and development stage, The relationship between water supply, improve rape utilization of water. Three kinds of film cultivation methods can better coordinate the three elements of rape yield, so that the number of pods, grain number and 1000-grain weight are better than the control. Different regions can be selected according to the advantages and disadvantages of different modes, respectively