摘要
研究不同比例有机氮对旱柳幼苗生长以及养分吸收的影响规律,以期为旱柳扦插育苗中科学施用有机肥提供理论依据。试验以一年生旱柳扦插苗为试材,设置无肥(T1)、纯无机氮(T2)、30%有机氮(T3)、50%有机氮(T4)、70%有机氮(T5)、100%有机氮(T6)6个处理,3次重复。结果表明:T4株高分别比T2、T3、T6提高了26.91%、14.67%、21.02%,地径T4分别高于T2、T5、T6处理42.70%、34.29%、48.41%;叶绿素含量5—6月T4分别低于T2处理0.24、0.11 mg/g,7—8月T4分别比T2提高了9.16%、35.29%;根、皮、枝、叶氮吸收量T4分别比T2提高了27.13%、26.08%、31.32%、43.30%,磷吸收量分别提高了32.04%、47.37%、49.63%、37.61%,钾吸收量分别提高了24.14%、18.83%、29.95%、30.51%。综合分析认为,T4对促进旱柳生长和养分吸收效果最佳。
To study the effect of different ratios of organic nitrogen on the growth and nutrient uptake of Salix matsudana,and provide a basis for scientific application of organic fertilizer in cuttage seedlings of S.matsudana,taking 1-year-old cuttage seedlings of S.matsudana as test materials,we set 6 treatments with no fertilizer(T1),pure inorganic nitrogen(T2),30%organic nitrogen(T3),50%organic nitrogen(T4),70%organic nitrogen(T5),100%organic nitrogen(T6)and repeated 3 times.The results showed that:the plant height of T4 was higher than that of T2,T3,T6 by 26.91%,14.67%,21.02%,respectively;the ground diameter of T4 was higher than that of T2,T5,T6 by 42.70%,34.29%,48.41%,respectively;the chlorophyll content of T4 was lower than that of T2 by 0.24,0.11 mg/g from May to June,and then,higher than that of T2 by 9.16%,35.29%from July to August;the nitrogen uptake in roots,skins,branches,leaves of T4 was higher than that of T2 by27.13%,26.08%,31.32%,43.30%,respectively;the phosphorus absorption of T4 was higher than that of T2 by32.04%,47.37%,49.63%,37.61%,the potassium absorption of T4 was higher than that of T2 by 24.14%,18.83%,29.95%,30.51%.It is concluded that T4 is the best treatment on promoting growth and nutrient uptake of S.matsudana.
作者
杜俊兰
Du Junlan(Shanxi Guandishan State Forestry Administration,Wenshui Shanxi 032100)
出处
《中国农学通报》
2020年第2期42-47,共6页
Chinese Agricultural Science Bulletin
基金
山西省科技厅攻关项目“油松、落叶松、新疆杨优良品种选育及旱柳高效营林技术研究”(20120311014-1).
关键词
有机肥
旱柳
扦插育苗
养分吸收
生长
organic fertilizer
Salix matsudana
cuttage seedlings
nutrient uptake
growth
