CAJ | 학술논문

以三峡库区油桐幼苗为实验材料，在种植前喷施百草枯，并以喷施清水作为对照，比较研究百草枯对油桐幼苗生长及其土壤理化性质的影响．结果表明：处理组的土壤 pH 值比对照高1.0％，差异不显著（p ＞0.05）；处理组的土壤碱解氮、速效磷和速效钾含量分别比对照高6.8％，6.3％和5.4％，差异均不显著（p ＞0.05）；处理组的土壤有机质、全氮、全磷和全钾含量分别比对照低1.5％，2.0％，0.39％和6.5％，差异也均不显著（p ＞0.05）；处理组的油桐幼苗株高和地径增长量分别比对照组高11.8％和1.6％．可见，在正常使用剂量范围内，百草枯不仅对土壤的理化性质影响不大，还有助于油桐幼苗生长．因此，百草枯可用于消除油桐幼苗早期的杂草．
이삼협고구유동유묘위실험재료，재충식전분시백초고，병이분시청수작위대조，비교연구백초고대유동유묘생장급기토양이화성질적영향．결과표명：처리조적토양 pH 치비대조고1.0％，차이불현저（p ＞0.05）；처리조적토양감해담、속효린화속효갑함량분별비대조고6.8％，6.3％화5.4％，차이균불현저（p ＞0.05）；처리조적토양유궤질、전담、전린화전갑함량분별비대조저1.5％，2.0％，0.39％화6.5％，차이야균불현저（p ＞0.05）；처리조적유동유묘주고화지경증장량분별비대조조고11.8％화1.6％．가견，재정상사용제량범위내，백초고불부대토양적이화성질영향불대，환유조우유동유묘생장．인차，백초고가용우소제유동유묘조기적잡초．
The change of soil physicalchemical properties and growth situation of Three Gorges Reservoir area Tung oil tree has been analyzed in this paper with spraying the appropriate concentration of paraquat and water before planting .Results indicate that the soil pH ,content of alkali‐hydrolysable nitrogen ,avail‐able phosphorus and available potassium of the treatment are respectively 1 .0% ,6 .8% ,6 .3% and 5 .4%higher than that in control ,no significant difference in the treatment and the control (p > 0 .05) ;soil or‐ganic matter ,total nitrogen ,total phosphorus and total potassium tested are 1 .5% ,2 .0% ,0 .39% and 6 .5% lower than the contrast ,differences are not significant (p > 0 .05) ;increment of height and basal di‐ameter of Tung oil tree plant treated are 11 .8% and 1 .6% higher than in control .Paraquat in a normal range not only has no obvious influence on the soil physical and chemical properties ,also is helpful to Tung oil tree growth .Therefore ,paraquat can be used to eliminate Tung oil tree early seeding weeds .