地膜覆盖与大白菜生产技术研究

CHINESE CABBAGE PRODUCTION USING PLASTIC MULCH

试验表明：地膜覆盖栽培大白菜，可促进其生长，具高产稳产的效果，但播种时的强日高温或暴雨造成出苗困难，出现缺苗断垄或幼苗细弱，是影响产量的重要因子。育苗移栽可有效地避开这一时期，且以无土育苗定植成活率高，缓苗快，产量高。

he experiments showed that growing Chinese cabbage with plastic mulch may advance its growth and development and was of the effect of high and stable yield.But the higher temperature and burning sun or rainstorm during the seedling time resulted in the lower rate of emergence of Chinese cabbage and poor growth in early stage.Lacking seedling and thin seedling were the important factors of affecting yield.Seekling transplanting may avoid the epriod and soiless seedling had higher survival after transplanting and high yield.Chinese cabbage production with perforated plastic mulch had remarkable effect of preventing senility and dissasses,and increasing yield commpared with the common plastic mulch.