沼肥对金叶女贞生长及生理特性的影响

分析不同沼肥施用比例对金叶女贞生长及生理特性的影响规律,为沼肥在育苗中科学合理应用提供理论依据。试验在田间条件下,设置常规施肥(CK,Z1)、25%沼肥(Z2)、50%沼肥(Z3)、75%沼肥(Z4)、100%沼肥(Z5)5个处理,3次重复。结果表明：新稍增长量Z4比对照提高了34.73%,Z2提高了6.89%;7—8月Z4叶绿素含量比Z1提高了35.00%、64.71%,Z5分别比Z1提高了20.00%、47.06%;8月根系活力Z4、Z5分别比Z1提高了55.26%、50.00%;6—8月水分利用效率Z4分别比Z1提高了53.45%、49.61%、60.06%,Z2与Z1之间无显著差异;POD活性5月所有处理之间无显著差异,6—8月Z4分别比Z1提高了25.34%、32.51%、42.21%;SOD活性4—5月所有处理之间无显著差异,6—8月Z4分别比Z1提高了42.29%、39.08%、34.29%。综合分析认为,Z4处理对促进金叶女贞生长和协调生理特性效果最佳。

Effects of Biogas Fertilizer on Growth and Physiological Characteristics of Ligustrum × vicaryi Hort

The study clarifies the effect of different proportions of biogas fertilizer on Ligustrum × vicaryi growth and physiological characteristics, thus to provide a basis for the rational application of biogas to Ligustrum × vicaryi seedling cultivation. In field condition, 5 treatments were set as conventional fertilization (control, Z1), 25% biogas fertilizer (Z2), 50% biogas fertilizer (Z3), 75% biogas fertilizer (Z4), 100% biogas fertilizer (Z5), 3 repeats were conducted. The results showed that: for new treetop growth amount, Z4 was higher than control by 34.73% and Z2 by 6.89%; the chlorophyll content of Z4 was higher than that of Z1 in July and August by 35.00% and 64.71%, and that of Z5 was higher than Z1 by 20.00% and 47.06%; the root activity of Z4 and Z5 treatment was higher than Z1 by 55.26% and 50.00% in August; water use efficiency of Z4 treatment was higher than Z1 by 53.45% , 49.61% and 60.06% in June, July and August, there was no significant difference between Z2 and Z1; POD activity had no significant difference among all treatments in May, while that of Z4 was higher than Z1 by 25.34%, 32.51% and 42.21% in June, July and August; SOD activity had no significant difference among all treatments in April and May, while that of Z4 was higher than Z1 by 42.29%, 39.08% and 34.29% in June, July and August. According to the comprehensive analysis, Z4 is the best treatment on promoting growth and physiological characteristics of Ligustrum × vicaryi.