木麻黄蚕豆套种模式对浙南泥质海岸土壤盐碱动态变化的影响

研究了浙南泥质海岸林地初期二年通过套种、覆盖等营林措施对泥质海岸土壤盐分及其pH年动态变化的影响.结果表明,①造林当年和次年0～20cm表层土土壤含盐量存在4月、7月和11月3个峰值和6月和10月2个谷值,7月为最高值,6月为最低值；二年中,0～20cm剖面土壤盐含量降低幅度达22.49％～16.09％；②造林当年＞20～50cm次层土土壤盐含量存在4月、11月2个峰值和7月、8月2个谷值；次年＞20～50cm次层土土壤含盐量月变化则除6月出现1个明显的谷值外,其余观测月份土壤盐含量动态变化呈比较平缓线性下降趋势；经历2a,＞20～50cm剖面土壤盐含量降低13.04％～15.83％；③二年的测定结果同时表明,表层土pH值在8.3～8.5,次层土pH值在8.4～8.6.

Effect of Silvicultural Patterns on Dynamic Change of Saline Alkaline Content in Muddy Coastal Forest of the Southern Zhejiang

Experiments were conducted on annual dynamic change of salt content and pH in muddy coast forest soil of the southern Zhejiang province by intercropping and covering in the first tow years after.The result showed that soil salt content in 0-20 cm layer in April,July and November of the two years was significant higher,that in June and October was significant lower,topped in July and lowest in June.Two years experiment indicated that the salt content in 0-20cm layer decreases by 22.49%-16.09%.In the first year of test,the variation of soil salt content in 20-50cm layer reached the maximum in April and November and the minimum in July and August,while in the second year of experiment,the salt content in 20-50cm layer was linear decrease,but there was a peak value in June.In two years,the salt content in 20-50 cm layer decreased by 13.04%-15.83%.Two years experiment resulted that changes of soil salt content had no evident effect on pH.