为了研究覆盖(普通地膜覆盖、生物可降解地膜覆盖、秸秆覆盖和无覆盖)对甘肃河西石羊河流域饲用玉米生长和营养价值的影响,于2014年3-10月在甘肃省武威市黄羊镇甘肃农业大学试验站进行田间定位试验。试验结果表明,普通地膜、生物可降解膜和秸秆覆盖均不同程度的增加了玉米叶面积、干物质积累量、干草产量和营养产量；生物可降解膜覆盖玉米粗蛋白、粗脂肪和粗纤维产量达最大值；与无覆盖相比,普通地膜覆盖、生物可降解膜覆盖和秸秆覆盖的玉米单株叶面积分别增加11.46%、10.23%和7.23%,单株干物质干物质积累分别增加26.84%、23.99%和7.38%,干草产量分别提高22.87%、21.16%和4.10%,总养分产量分别提高20.76%、20.73%和6.23%。从饲用玉米干草产量和营养产量等综合考虑,生物可降解膜可作为该区域普通地膜的代替覆盖材料,由于生物可降解地膜环保且无需回收,有利于环境和农业生态系统可持续发展。
英文摘要:
In order to research the effects of mulching (common plastic film mulching, biodegradable film mulching, straw film mulching and no mulching) on growth and nutritional value of forage maize in Gansu Arid Oasis Irrigation Area. A field experiment was conducted in Gansu university set of wuwei during the period from March to October in2014. The results show that common plastic film, biodegradable film and straw film mulching were increased of leaf area and dry matter accumulation on maize per plant, hay yields and nutritional yields in varies degrees. The CP, EE and CF yields of Biodegradable film mulching reached a maximum. Compared with no mulching, the increases of leaf area on maize per plant for common plastic film mulching, biodegradable film mulching and straw film mulching were 11.46 %、10.23 % and 7.23%, respectively, while increases of dry matter accumulation on maize per plant were 26.84 %、23.99 % and 7.38 %, respectively, while increases of hay yields were 22.87 %、21.16 % and 4.10 %, respectively, while increases of total nutritional yields were 20.76 %、20.73 % and 6.23 %, respectively. Considering hay yields and nutritional yields of forage maize, biodegradable film can replace common plastic film be used in this region. Due to biodegradable film mulching was without badly effect for environmental and Conducive agro-ecosystems sustainable development .
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