PPC生物降解渗水地膜覆盖高粱试验

Experiment of Sorghum Covered with PPC Biodegradable Water Permeable Film

在陕西省佳县进行PPC生物降解渗水地膜旱地覆盖高粱试验。结果表明,1300 mm×0.007 mm PPC生物降解渗水地膜覆盖与1300 mm×0.007 mm PE渗水地膜覆盖之间产量水平相当,比无覆盖对照明显增产35.06%;PPC生物降解渗水地膜覆盖65 d的土壤温度、土壤水分与PE渗水地膜相近,覆盖65 d到收获前均低于PE渗水地膜;PPC生物降解渗水地膜50 d开始破裂,地面膜呈现网状裂解,收获时膜的残留率为30.81%;地面膜网状裂解形成的近地面微生态环境,可能更利于作物后期的生长。PPC生物降解渗水地膜应用于农业生产具有可行性。

The experiment of sorghum covered with PPC biodegradable water permeable film in dry land carried out in Jiaxian county,Shaanxi province.The results showed that the yield of PPC biodegradable water permeable film mulch with 1300 mm×0.007 mm and PE water permeable film mulch with 1300 mm×0.007 mm was equivalent,which was 35.06%higher than that without mulch.The temperature and water content of the soil covered 65 d by PPC biodegradable water permeable film were similar to that of PE water permeable film,and were lower than that of PE water permeable film covered 65 d to before harvest.PPC biodegradable water permeable film began to rupture at 50 d,and the surface film showed a network cracking,the residual rate of membrane was 30.81%when the crop harvested.The near surface microecological environment formed by net cracking of ground membrane may be beneficial to the later growth of crops.The application of PPC biodegradable water permeable mulch film in agricultural production is feasible.