地膜覆盖对春菠菜的影响

地膜覆盖广泛应用于多种园艺作物，但是尚未应用于菠菜春季栽培，笔者以杂交耐寒圆叶菠菜和‘美美’2个菠菜品种为试材，研究了地膜覆盖对春菠菜的影响，以探明地膜覆盖对春菠菜发芽、生长和产量、品质的影响，为该技术的推广应用提供理论依据。研究结果表明：地膜覆盖对菠菜的发芽时间和早期生长的影响非常显著，发芽时间平均缩短了7天以上，菠菜生长早期的各项外形指标都明显增加。但是到了收获期，各项指标与对照的差异并不明显。适时揭膜有可能是有效发挥覆膜效果的关键措施。覆膜后杂交耐寒圆叶菠菜叶片的蛋白质和可溶性糖含量显著提高，其他营养成分的含量在覆膜处理和对照之间差异不显著。地膜覆盖可以促进春菠菜生长发育并且提高产量和品质。

Effect of Plastic Film Mulching on Spring-Cultivated Spinach

Plastic film mulching is widely used in the production of many horticultural crops, but there is still no report on its application in spring spinach cultivation. In order to provide theoretical foundation for the popularization and application of plastic film mulching on spring-cultivated spinach, the authors studied the effect of plastic film mulching on germination, growth, yield and quality of hybrid round-leaf spinach and ‘Meimei’ spinach. The results showed that plastic film mulching significantly influenced the germinating time and the early growth of spinach, the germinating time decreased by more than 7 days, and all appearance indexes increased significantly. But all the indexes were not significantly different from that of CK in harvest time. Uncovering in time was the key measure to fulfill the effect of plastic film mulching. After filming, the protein and soluble sugar content of hybrid round-leaf spinach increased significantly, and other nutrient contents had no significant difference from that of CK. Plastic film mulching could promote the growth of spring-cultivated spinach and increase yield and quality.