中文摘要：

[目的]研究不同地膜覆盖对地温和杂交谷生长发育的影响。[方法]以张杂谷10号为研究对象,通过设置裸地栽培、白色/黑色普通地膜覆盖、白色/黑色可降解地膜覆盖5种处理研究地温、光合等指标。[结果]生育前期,白色、黑色覆膜处理分别提高0~20cm的平均地温约6和4℃,生育后期覆膜增温效果减弱。黑色地膜在一定程度上能避免高温胁迫。土层越深,日温差越小,各处理间差异不显著。覆膜处理SPAD值均高于裸地。白色普通/可降解地膜处理Pn显著高于裸地栽培,分别高5.17、5.46μmol·m^-2·s^-1。黑色地膜处理可显著提高WUE,黑色普通/可降解地膜较裸地栽培分别高出7.78%、7.05%。覆膜处理较裸地栽培先于7~10d左右株高达最大值。黑色地膜增产效果最明显,其中黑色可降解地膜产量最高,为9 713.3kg·hm^-2。[结论]与普通地膜相比,可降解地膜在生长后期逐渐分解,在土壤中的残留小,在张杂谷生产中替代普通地膜具有一定的可行性。

英文摘要：

[Objective]In order to study the effect of different plastic film mulching on the relationship between ground temperature and hybrid valley.[Methods]This experiment conducted 5treatments of bare ground,white/black ordinary film and white/black degradable film based on Zhangzagu 10.[Results]The results showed that at the early growth stage,the average temperature at 10~20cm were improved around 6 ℃ and 4 ℃ under white/black film treatment,the warming effect was weakened at the late growth stage.Black film could avoid high temperature stress to a certain extent.There were smaller difference in daily temperature under deeper soil layer,the difference between the treatments was not significant.SPAD value of plastic film treatment was higher than bare land.Pn under white normal/degradable plastic film treatments were 5.17 and 5.46μmol·m^-2·s^-1 significantly higher than CK.WUE was significantly improved under black film treatment,ordinary/degradable plastic film were 7.78%,7.05% higher than CK.The plant height under film mulching treatments were earlier about 7~10days reached the maximum value than CK.The yield under black film treatment was significant increased,and black degradable plastic film had the highest yield,which was 9713.3kg·hm^-2.[Conclusion]Compared with ordinary plastic film,degradable plastic film gradually decomposed in the late growth stage,and the residue in the soil was small.This study showed that it was feasible to replace ordinary plastic film with degradable plastic film in the production of Zhangzagu.