不同生物降解膜在春甘蓝生产中的应用试验

摘要：为了提高全生物降解膜的降解可控性能及规模化应用性价比，通过技术验证和产品遴选，采用9种全生物降解膜及2种普通PE膜为材料，开展春甘蓝覆膜试验，分析了不同地膜对甘蓝生育期、农艺性状、产量及其降解情况的影响。结果表明：不同降解地膜覆盖效果与普通地膜基本一致，且对甘蓝生长和产量无不良影响，可满足甘蓝覆膜栽培需求；与不覆膜相比较，覆盖地膜可使甘蓝生育期提前3～6 d，其中结球紧实期均提前6 d，产量均显著提高，可增产38.92%～52.72%。全生物降解膜上海黑8（黑色，厚度8 μm）表现较为突出，具有适宜的降解期，增产效果（增产率47.47%）也较为显著。

Application Experiment of Different Biodegradable Films in the Production of Cabbage in Spring

Abstract: In order to improve the controllable degradation performance and cost performance of large-scale application of full-biodegradable films, through technical verification and product selection, 9 kinds of full-biodegradable films and 2 kinds of ordinary PE films were used as materials to carry out film mulching experiments of spring cabbage, and the effects of different plastic films on the growth period, agronomic characters, yield of cabbage and degradation of films were analyzed. The results showed that the effect of different biodegradble film mulching was basically the same as that of common plastic film, and had no adverse effect on the growth and yield of cabbage, which could meet the needs of cabbage mulching cultivation. Compared with no mulching film, the growth period of cabbage with mulching films could be advanced by 3-6 days, among which the heading and compaction period could be advanced by 6 days, and the yield could be significantly increased by 38.92%-52.72%. The full-biodegradable film ''Shanghai black 8'' (black color and thickness of 8 μm) was more prominent with a suitable degradation period, and the effect of increasing yield (increasing yield rate of 47.47%) was also significant.