Effects of Nano carbon on the soil moisture and nutrient and the growth of wheat in Guanzhong region
HU Zichao;ZHOU Beibei;CHEN Xiaopeng;PENG Yao;WANG Quanjiu;Xi'an University of Technology,Conservancy and Hydropower College,State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area;Yunnan Institute of Water & Hydropower Engineering Investigation,Design and Research;State Key Laboratory of Soil Erosion and Dryland Farming on the Losses Plateau,Institute of Soil and Water Conservation,Northwest A&F University;
By belt application of different Nano carbon contents( 0,0.001,0.005,0.007 kg·kg~(~(-1)) and 0.010 kg·kg~(~(-1))) at surface soil layer of 5~10 cm in the winter wheat field,we analyzed the effects of nano carbon on soil moisture and nutrient,winter wheat growth process and yield. The results showed that belt application of nano carbon in the soil could increase soil moisture content in root layer of winter wheat,reduced the moisture content of deep soil and decrease the fluctuation of soil water distribution. Compared with the control group from winter wheat seedling stage to grain filling stage in 5 ~ 10 cm soil depth,the test zones with 0.007 kg·kg~(~(-1)) and 0.010 kg·kg~(~(-1)) in gravity nano carbon contents increased the average soil water content by 4.5% and 6.8%,respectively. Nano carbon effectively improved the wheat field soil's retention of nutrients in different growth stages of winter wheat,and in the same growth period,the nutrient concentration of surface soil increased with the increase of Nano carbon contents. And compared with the control group during winter wheat grain filling stage in 5 ~ 10 cm soil depth,the test zones with 0.007 kg·kg~(~(-1)) and 0.010 kg·kg~(~(-1)) in gravity nano carbon contents increased the average nitrate nitrogen by 25% and 33.6%,average available phosphorus by 43.7% and 51.3%,and average available potassium by6.6% and 17.5%,respectively. The stem diameter,leaf area and biomass of winter wheat were generally positivelycorrelated with nano carbon contents in the whole growth period of winter wheat,and the test zones with 0.007 kg·kg~(~(-1)) and 0.010 kg·kg~(~(-1)) in gravity nano carbon contents on the growth and development process of winter wheat is the most significant,the yield compared with the control group increased by 2.4% and 3.5%,respectively.
【Fund】： 国家自然科学基金项目(51239009);; 陕西省科技支撑项目(2013KJXX-38);; 陕西省自然科学基金(2015JQ 5161)
【CateGory Index】： S512.1
【CateGory Index】： S512.1