CAJ | 학술논문

以常规施肥作为对照,设计3个不同氮素用量(450、300、150 kg/hm2),研究了茶园滴灌施肥对茶叶产量、品质及土壤养分性状的影响.结果表明,滴灌施肥处理比对照增产3.4%~9.3%,施氮量与产量间呈明显正相关,以年施氮量300~450 kg/hm2产量较高,滴灌施肥对茶叶品质影响不显著.滴灌施肥处理成熟叶含氮量显著高于对照,且季节性差异明显,秋茶﹥夏茶﹥春茶,滴灌施肥可促进茶树对氮素的吸收利用.施肥方式对土壤 pH 值影响显著,滴灌施肥处理土壤 pH 值明显高于对照,可能因其氮素利用率较高而有助于减弱无机氮对土壤的酸化作用.
이상규시비작위대조,설계3개불동담소용량(450、300、150 kg/hm2),연구료다완적관시비대다협산량、품질급토양양분성상적영향.결과표명,적관시비처리비대조증산3.4%~9.3%,시담량여산량간정명현정상관,이년시담량300~450 kg/hm2산량교고,적관시비대다협품질영향불현저.적관시비처리성숙협함담량현저고우대조,차계절성차이명현,추다﹥하다﹥춘다,적관시비가촉진다수대담소적흡수이용.시비방식대토양 pH 치영향현저,적관시비처리토양 pH 치명현고우대조,가능인기담소이용솔교고이유조우감약무궤담대토양적산화작용.
The effects of drip irrigated fertilization on tea yields, quality and soil character on three different nitrogen(N) application treatments (450 kg/hm2, 300 kg/hm2, 150 kg/hm2)were conducted and by using the conventional fertilization as the control. The results showed that compared with the control, drip irigated fertilization increased tea production significantly by 3.4%~9.3%, it showed a positive correlation between nitrogen application rate and tea yields, a higher production was obtained in the treatment of annual nitrogen input of 300~450 kg/hm2 the drop irigated fertilization showed a insignificant impact on the tea quality. As mature leaf nitrogen content is concerned, drip irrigated fertilization treatment were significantly higher than control, indicating use efficiency of nitrogen fertilizer was higher than that of control, nitrogen content of mature leaf with significant seasonal variations, the highest in autumn tea, summer tea the second, spring tea the minimum. The drip irrigated fertilization promoted the absorption and utilization of nitrogen for tea plant. Different fertilization treatments effected on soil pH significantly, soil pH in drip irrigated fertilization treatment was higher than that of control, probably that the higher nitrogen utilization is helpful in weakening the soil acidification caused by in organic nitrogen.