| 3 | Effect of Fertilizer Application on the Yield of Walnut (Juglans regia L.)显示文摘[Objectives] This study was conducted to explore the fertilization ratio of walnut, so as to provide a basis for rational fertilization of walnut. [Methods] Under the condition of gravelly yellow soil in Chaotian District, Guangyuan City, the orthogonal design of L_9(3~4) was used to test the fertilization ratio of nitrogen, phosphorus and potassium fertilizers. [Results] The effects of nitrogen, phosphorus and potassium fertilizers on walnut yield ranked as phosphate fertilizer>potassium fertilizer>nitrogen fertilizer. The different treatments had great effects on the yield of walnut, and for the land with gravelly yellow soil, the suitable annual fertilization amount of walnut was urea 1 200 g/plant + calcium superphosphate 1 500 g/plant + potassium sulfate 940 g/plant. [Conclusions] This study provides a theoretical basis for rational fertilization of walnut in Sichuan Province. | Anmin MIN Fanrong ZHENG Li ZHANG Jianshe HE Changxu YANG Qianli LIU Li WANG Yu WANG Hongxia LI | 2019 | Agricultural Biotechnology2019，8，2： | 0 |
| 4 | Biomass and Nutrient Accumulation Characteristics of Young Stands of Alnus cremastogyne显示文摘To investigate plant biomass and nutrient distribution and accumulation in organs of Alnus cremastogyne at different ages from 1 to 4 years,the biomass,N,P,K,Ca,Mg,Fe and Zn were tested. The results showed that the average biomass of the whole tree and the biomass of leaf,branch,stem,and root were in positive correlation with tree age,but the growth rate of biomass had a decreasing trend with the tree age increasing,and only the biomass proportion of the trunk in the whole individual plant showed an increasing trend with age. The contents of nutrient elements in organs showed an order of N > Ca > K > Mg > P > Fe > Zn;and the contents of N,P and K were higher in the leaf than in other organs,and the contents of Ca,Mg and Fe in the root were higher than in other organs. The accumulations of N,P,K,Ca,Mg and Zn were the highest in the trunk,and that of Fe was the highest in the root. The annual net accumulations of N,P,K,Ca and Mg in the average trees from 1 to 4 years old were 17. 07,40. 79,95. 82 and 106. 71 g,respectively,and the annual net accumulations of microelements( Fe and Zn) were 335. 04,577. 26,1267 and 1525. 27 mg,respectively. | Anmin MIN Yong WANG Xingliang LIU Yu WANG Li WANG Hongxia LI Xiaohu CAI Yongming AN | 2018 | Agricultural Biotechnology2018，7，1： | 0 |
| 5 | A Study of the Artificial Vegetation Restoration Technology in the Wenchuan Earthquake Area显示文摘The situation of plants on the slope can reflect the effect of vegetation restoration during the process of artificial vegetation recovery.Taking the typical damaged slope of Wenchuan earthquake area as the research object,through observing the vegetation situation of deserted slope,the results show that compositae plants and gramineous plants are suitable for being pioneer plants and dominant in community; during the vegetation succession,many compositae and gramineous species invade,but there is no magaphanerophytes invading; as time goes by,the herbaceous species and diversity increase gradually,so the ecosystem becomes more stable and the gradient is important for the vegetation restoration. | Yu WANG Xingliang LIU Anmin MIN Li WANG Wenbao MA Hongli PAN Hongxia LI Li ZHANG | 2014 | Asian Agricultural Research2014，6，9： | 0 |
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