滴灌水分驱动穴施鸡粪对土壤酶活空间分布的影响

发布时间：2018-04-29 10:27

本文选题：滴头位置 + 穴施鸡粪　；参考：《中国土壤与肥料》2017年01期

【摘要】：利用田间模拟试验,研究不同滴头位置和穴施鸡粪对土壤酶活性空间分布的影响,为大田施肥和灌溉技术提供理论依据。实验设置两个滴水位置:距肥料中心0和30 cm,施肥方式为穴施,将其组合为CM_0(水肥位置一致)、CM_(30)(滴头距肥料30 cm),以不施肥滴头正下方为对照(CK),测定了垂直深度(0~60 cm)和水平位置(10、20和30 cm)的土壤脲酶、蔗糖酶和碱性磷酸酶活性。结果表明,滴水和穴施鸡粪处理均能提高不同土层各水平位置土壤脲酶、蔗糖酶和碱性磷酸酶活性,且在0~20 cm土层各水平位置土壤酶活性有显著增加。3种酶活性均在5~15 d达到最大值,随后逐渐降低。CM_0和CK处理在整个处理周期中,各土层3种土壤酶活性均在水平10 cm酶活性最高,以滴头为中心向四周减小,而CM_(30)在0~20 cm土层处理后5 d脲酶和蔗糖酶活性水平30 cm最高,离滴头水平距离越远其活性就越小,随着处理时间延长,脲酶活性水平10 cm最高,离肥料水平距离越远其活性越小,蔗糖酶活性没有一致的规律,而碱性磷酸酶水平10和30 cm高于20 cm,20~40 cm土层脲酶活性在处理25 d后以肥料为中心向四周降低,碱性磷酸酶活性在整个处理周期中各水平30cm最高。因此,水肥相同位置更有利于提高土壤脲酶、蔗糖酶和碱性磷酸酶活性,耕层离肥料水平10 cm位置土壤酶活性最高。
[Abstract]:The field simulation test was used to study the effect of different drop head position and manure on the spatial distribution of soil enzyme activity, and provide theoretical basis for the field fertilization and irrigation technology. The experiment set up two drip water positions: 0 and 30 cm from the fertilizer center, and the fertilization mode was CM_0 (the position of water and fertilizer is consistent), CM_ (30) (30 cm drop head fertilizer). The soil urease, invertase and alkaline phosphatase activity in the vertical depth (0~60 cm) and the horizontal position (10,20 and 30 cm) were measured at the vertical depth (CK) and the horizontal position (10,20 and 30 cm). The results showed that the soil urease, invertase and alkaline phosphatase activity in different soil layers could be improved by drip and cave dung treatment, and in the 0~20 cm soil layer. The activity of soil enzyme in each level increased significantly in the.3 D enzyme activity at the maximum of 5~15 D, and gradually decreased by.CM_0 and CK in the whole treatment period. The activity of the 3 soil enzymes in each soil layer was the highest in the level 10 cm enzyme, and the drop head was reduced to four weeks, while the CM_ (30) was treated with 5 d urease and sucrase after the 0~20 cm soil layer. The activity level of 30 cm was higher than that of the drop head, the smaller the activity was, the higher the activity was, the activity of urease was 10 cm, the activity of urease was the highest as the treatment time extended, the less active the activity was, the activity of invertase was less consistent with the level of fertilizer. The alkaline phosphatase level 10 and 30 cm were higher than 20 cm, and the urease activity of 20~40 cm soil layer was fertilized after 25 D treatment. The activity of alkaline phosphatase was highest at all levels of 30cm in the whole treatment cycle. Therefore, the same position of water and fertilizer was more beneficial to soil urease, invertase and alkaline phosphatase activity, and the soil enzyme activity was the highest at the level of 10 cm from the level of fertilizer.

【作者单位】：新疆生产建设兵团绿洲生态农业重点实验室/石河子大学农学院;
【基金】：国家自然科学基金项目(31360501) 石河子大学高层次人才项目(RCZX201132) 国家科技支撑计划(2012BAD42B02-3)
【分类号】：S154.2

【相似文献】