摘要
研究核桃—小麦间作土壤养分和酶活性的变化。结果表明,与单作小麦土壤相比,核桃—小麦间作对土壤理化性质有一定的影响,主要表现为土壤有机质丰富,并随种植年限的增加呈上升趋势;土壤中速效磷的含量开始没有明显变化,但是经过一段时间后其含量逐渐上升;全氮量随年限的增加先下降后上升。说明经过较长时间的核桃—小麦间作对土壤中氮、磷有一定的改良作用。核桃—小麦间作时间对土壤酶活性也有一定的影响,其中脲酶、碱性磷酸酶呈先降低后升高的趋势,蔗糖酶先升高后降低,在第3年达到最大值。上述表明,随着核桃—小麦间作种植年限的延长,土壤养分和酶活性总体呈上升趋势,土壤肥力增强。
The changes of soil nutrients and enzyme activities in Juglans regia and Triticum aestivu intercropping were studied.The results showed that compared with monoculture Triticum aestivu soil,Juglans regia and Triticum aestivu intercropping had a certain effect on soil physical and chemical properties,which mainly showed that soil organic matter was rich,and showed an upward trend with the increase of planting years;the content of available phosphorus in soil did not change significantly at first,but gradually increased after a period of time;the total nitrogen content first decreased and then increased with the increase of planting years.The results showed that Juglans regia and Triticum aestivu intercropping had a certain improvement effect on soil nitrogen and phosphorus after a long time.The results showed that the time of Juglans regia and Triticum aestivu intercropping had a certain effect on soil enzyme activities,among which urease and alkaline phosphatase decreased first and then increased,sucrase increased first and then decreased,and reached the maximum in the third year.The results showed that soil nutrients and enzyme activities increased and soil fertility increased with the extension of Juglans regia and Triticum aestivu intercropping years.
作者
沈永涛
张胜昔
岳长江
王淼
SHEN Yongtao;ZHANG Shengxi;YUE Changjiang;WANG Miao(Lanzhou Green Project Seedling Management Station of South-north Mountains Environments,Lanzhou 730030,China;Lanzhou Green Project Headquarter of South-north Mountains Environments,Lanzhou 730030,China)
出处
《甘肃林业科技》
2021年第2期40-42,50,共4页
Journal of Gansu Forestry Science and Technology
基金
甘肃省科技重大专项《核桃种质创新与提质增效关键技术集成与示范》(18ZD2NA006-5)。
关键词
核桃
小麦
土壤养分
酶活性
Juglans regia
Triticum aestivu
soil nutrient
enzyme activity
