Feasibility of usage of recycle paper mulching in upland field

高地再生纸覆盖与地膜覆盖和裸地相比，土壤温度降低。在夏季良好的气候条件下，再生纸覆盖与裸地地表下5cm处的最大地温差约为8- 10摄氏度。因此，很难使用再生纸覆盖物来保护作物免受寒冷温度的影响，或者像普遍使用的聚乙烯覆盖物那样通过升高温度来促进植物的生长。再生纸的另一个显著特征是高地覆盖由于纸下不生草，不需要除草剂，我们在夏季桑迪上进行了再生纸覆盖栽培日本萝卜的试验，研究结果表明：1）说明在夏季桑迪条件下，利用再生纸覆盖栽培日本萝卜的可行性潜力较大。2）再生纸覆盖的种植穴在灌溉和干燥条件下，通过纸张的张力移动。结果表明，附着在纸上的日本萝卜嫩茎向附着的纸弯曲。3）用于覆盖的再生纸在19周内就失去了覆盖材料的功能，似乎与土壤融为一体。结果表明，随着时间的推移，再生纸覆盖的土壤温度抑制效果有逐渐丧失的趋势。在管栽条件下，不同覆盖材料（包括再生纸）对桔梗的收获效果差异不显著。

The recycle paper mulching in upland field occurred lower temperature in the soil compared with vinyl mulch or bare land. Under the fine climate condition in summer season, the maximum difference of soil temperature between recycle paper mulching and bare land at 5 cm under soil surface is about 8-10ﾟC.It is therefore difficult to use the recycle paper mulching to protect crops from the cold temperature or to promote the growing of the plant by rising temperature like popularly used the polyethylene mulching.Another notable feature of the recycle paper mulching in upland field is no need the weed killer because of the no growing grasses under the paper.We tried to cultivate the Japanese radish under summer condition in sandy field used by the recycle paper mulching because it is said to difficult cultivating the Japanese radish under hot climate season.The following results were obtained.1) It is said that the feasibility of usage of recycle paper mulching to cultivate the Japanese radish has high potentiality under summer condition in sandy field.2) The planting holes of the recycle paper mulching were moved by strain of the paper by the irrigation and drying. As the results, the young stems of the Japanese radish attached to the paper bent toward the attached paper.3) The recycle paper for the mulch was lost the function of the mulching materials within 19 weeks and seemed the paper melted with soil.We also tried to find the feasibility of the usage of the flower cultivating in the pipe house. As the results, the recycle paper mulching has tendency to lose the effect of soil temperature restraint with passage of time. The harvesting results of the Turkish bellflower growing test in the pipe hpose using various mulching materials including recycling paper had no significant betweem mulching materials.