全生物降解节水膜对土壤理化性质及果树生长的影响

发布时间：2018-03-02 22:34

  本文选题：全生物降解膜　切入点：新疆小白杏　出处：《中山大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：选取新疆小白杏Prunus armeniaca为研究对象,在新疆吐鲁番亚尔乡布设覆盖全生物降解膜与无膜试验区,对比分析两试验区杏树4-6月生长期土壤水分、温度、养分及杏树生长(基径、新梢、叶)的差异性,并探讨了覆膜调温保墒的作用机制,结果表明:(1)与无膜区相比,4-6月份覆膜区0H≤20 cm、20 cmH≤40 cm及40 cmH≤60 cm平均可分别提高3.3%、7.08%、12.6%;4月份0H≤60 cm土壤温度平均提高1.5℃,可显著降低高温期5月份0H≤20 cm土层土壤温度,对同为高温期的6月份也有一定的降温作用;覆膜可促进土壤肥力的提升,但试验区土壤仍较为贫瘠。(2)覆膜可显著促进杏树的生长,覆膜区Ⅰ、Ⅱ、Ⅲ径级平均基径分别显著增加了11.86%、9.84%、11.80%,百叶质量分别增加了111.69%、5.11%、17.56%,平均叶面长≥6 cm,平均叶面宽≥4 cm,杏树径级越小,覆膜对杏树新梢的影响越明显。(3)全生物降解膜对土壤水分、温度的综合作用使得覆膜具有良好的调温保墒功能,同时促进杏树的生长。综上,在新疆杏树的栽培生产中可将覆膜技术进行推广应用,从而有效提高区域水资源利用率及农业生产效率。
[Abstract]:Xinjiang small white apricot (Prunus armeniaca) was selected as the research object. In Yar Township, Turpan, Xinjiang, the total biodegradable film and no-film test area were set up. The soil moisture, temperature, nutrient and growth (basal diameter) of apricot in the growing period of April to June in the two experimental areas were compared and analyzed. The differences of new shoots and leaves were discussed, and the mechanism of film mulching, temperature regulation and moisture conservation was also discussed. The results showed that the average soil temperature of 0 H 鈮，

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