山稻间作对油茶林地土壤理化性质的影响

发布时间：2018-01-29 23:31

本文关键词： 油茶间作山稻土壤理化性质　出处：《西南大学学报(自然科学版)》2017年11期 　论文类型：期刊论文

【摘要】：为了弄清山稻间作经营对油茶林地土壤的影响,研究分析了山稻和油茶间作林地土壤含水量、容质量、养分、呼吸强度及酶活性指标变化.结果表明:山稻间作显著降低了油茶林地土壤的含水量、土壤容质量和呼吸强度,江山、青田和金华3个试验样地山稻间作处理的土壤的含水量分别下降了35.00%,9.20%和19.84%,土壤容质量分别下降了17.39%,4.65%和12.02%,呼吸强度则分别下降了54.58%,20.45%和13.80%;在土壤养分方面,山稻间作虽然对油茶林地土壤全氮、全磷和全钾质量分数影响无统计学意义,但明显降低了土壤速效钾的质量分数,江山、青田和金华3个试验样地山稻间作处理的土壤速效钾质量分数分别下降了13.37%,12.17%和36.68%,而有效磷的质量分数分别提高了49.85%,12.98%和45.43%,此外,山稻间作还明显降低了土壤有机质和微生物生物量碳的质量分数,江山试验样地山稻间作处理的土壤有机质和微生物生物量碳质量分数分别下降了27.44%和37.24%;在土壤酶活性方面,山稻间作对土壤蔗糖酶和脲酶的活性的影响无统计学意义,但显著提高了土壤过氧化氢酶和磷酸酶活性.可见,山稻间作经营一定程度上降低了油茶林地土壤的肥力水平,在实际生产中应加强有机肥和钾肥的施用.
[Abstract]:In order to find out the effect of mountain rice intercropping on the soil of Camellia oleifera forest land, the soil water content, capacity quality and nutrients of mountain rice and Camellia oleifera intercropping forest land were studied and analyzed. The results showed that the soil moisture content, soil capacity quality, respiration intensity and soil water content were significantly decreased by the intercropping of mountain and rice. The soil water content decreased by 35.00% and 19.84% in Qingtian and Jinhua plots, respectively, and the soil capacity quality decreased by 17.39%. At 4.65% and 12.02, the respiratory intensity decreased by 54.58% and 13.80%, respectively. In terms of soil nutrients, although there was no significant effect on soil total nitrogen, total phosphorus and total potassium mass fraction in oil-tea forest land, the soil available potassium mass fraction was significantly decreased. The soil available potassium content of Qingtian and Jinhua plots decreased by 13.37% 12.17% and 36.68% respectively. The mass fraction of available phosphorus increased by 49.8512.98% and 45.43%, respectively. In addition, the soil organic matter and microbial biomass carbon content of soil organic matter and microbial biomass were significantly decreased by the intercropping of mountain and rice. The soil organic matter and microbial biomass carbon content of intercropping treatments in Jiangshan experiment decreased by 27.44% and 37.24, respectively. In the aspect of soil enzyme activity, the effect of intercropping on soil invertase and urease activity was not statistically significant, but significantly increased soil catalase and phosphatase activity. The soil fertility level of oil-tea plantation was reduced to a certain extent by the intercropping of mountain and rice, and the application of organic fertilizer and potassium fertilizer should be strengthened in actual production.
【作者单位】：中国林业科学研究院亚热带林业研究所;青田县林业局;江山市林业技术推广站;
【基金】：浙江省省院合作林业科技项目(2014SY03) 国家自然科学基金项目(31600551)
【分类号】：S714.2
【正文快照】： 2.青田县林业局,浙江青田323900;3.江山市林业技术推广站,浙江江山324100油茶是我国南方重要的木本食用油料树种[1-2],是国家大力倡导发展的经济林木,对增加国内食用油供给、保障国家粮油安全具有长远的战略意义,目前油茶在我国的种植面积达400多万hm2.随着近年来油茶新品种造

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