Abstract
In order to understand the soil pH and main nutrient characteristics of newly added cultivated land in the eastern part of Guanzhong, and 160 soil samples were collected in 2016, the soil pH, organic matter, total nitrogen, available phosphorus and available potassium in Heyang County were studied The suitability distribution of the indicators, using stepwise regression and path analysis methods, analyzes the direct relationship between soil pH and soil nutrients, and provides a theoretical basis for improving the newly added cultivated land. The results showed that the soil pH in Heyang County varied from 8.42 to 9.67, the soil organic matter content varied from 3.46 to 17.93 g/kg, the soil total nitrogen content varied from 0.13 to 5.61 g/kg, and the soil available phosphorus changed The range is 1.73 ~ 63.06 mg/kg, and the soil available potassium range is 46.50 ~ 523.74. The newly added soil has a certain nutrient basis, but it should be further adjusted and improved during the cultivation process. The direct positive effect on soil pH value is mainly soil organic matter, and the direct negative effect is mainly soil available phosphorus. By adjusting the organic matter, total nitrogen, available phosphorus and available potassium in the soil, the pH value of the soil can be effectively improved, so that the newly cultivated soil is suitable for the growth of local crops.
Highlights
Soil nutrient status is the basic element that determines soil fertility, and is closely related to the growth status and quality of agricultural products [1,2]
Heyang County is located in the northeast of Guanzhong Plain in Shaanxi Province, in the east of Weibei Dry Highland, in the middle and east of Weinan City, east of the Yellow River, and Linyi County in Shaanxi Province is separated; Dayu River is in the west and is adjacent to Chengcheng County; Yiliang Mountain is in the north, bordering Hancheng City and Huanglong County; Tiekila Mountain is in the south, and Dali County and Chengcheng County are connected (Study on the spatial and temporal evolution of land use in the county area)
From the perspective of sample distribution, 100% soil pH is distributed in a very high range Inside, it shows that the soil in Heyang County is generally alkaline, and corresponding measures need to be taken to adjust it
Summary
Soil nutrient status is the basic element that determines soil fertility, and is closely related to the growth status and quality of agricultural products [1,2]. At present, people's research on soil nutrients mainly focuses on the land that has been cultivated for many years, and there is little research on the soil nutrients of newly added cultivated land. The pH directly affects the physical and chemical properties of the soil by affecting the formation, conversion and effectiveness of soil nutrients [4,5], which affects the yield and output of agricultural products quality. Studying the soil pH and nutrient characteristics of newly added cultivated land is of great reference significance for the management of newly added cultivated land and soil maintenance
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
