东北平原风沙土耕层功能性问题的研究

论文总字数：18611字

目 录

1.引言...........................................................................................................................................4

2.研究区域概括和研究方法

2.1研究区域概括....................................................................................................................5

2.2研究方法............................................................................................................................5

3结果与分析

3.1各指标分布情况

3.1.1 研究区域pH值......................................................................................................5

3.1.2研究区域碱解氮、速效磷、速效钾.....................................................................6

3.1.3研究区域全钾、全磷.............................................................................................7

3.1.4研究区域有机质........................................................................................8

3.1.5研究区域含水量....................................................................................................9

3.1.6研究区域田间持水量和饱和持水量...................................................................10

3.1.7研究区域土壤固液气所占百分比......................................................................11

3.1.8研究区域土壤三相比R值..................................................................................12

3.1.9研究区域土壤硬度..............................................................................................12

3.2研究区域玉米产量..........................................................................................................13

4讨论........................................................................................................14

5结论........................................................................................................15

6参考文献................................................................................................15

7致谢........................................................................................................17

东北平原风沙土耕层条件对玉米产量的影响

余洋哲

，China

Abstract: Improve the yield of maize in the northeastern wind and sand and find the construction index of reasonable tillage, provide the theoretical basis for the sustainable utilization of water and soil resources and the sustainable development of agriculture in the region, and provide scientific and technological support for enhancing the cultivated land and comprehensive production capacity of the northeastern plain. A typical method was used to carry out field investigation and sampling, and the basic physical and chemical properties of the soil were analyzed by using the grid method. Then, the Arcgis mapping tools were used to make each of the soils in the northeastern region. The spatial distribution of the indicators in the study area, according to the pattern of indicators and corn production were compared to analyze the correlation between the indicators and yield, so as to influence the evaluation of corn yield reasonable plowing evaluation index. According to the analysis of the indicators, the suitable soil pH value of maize is between 6.5 and 7, the demand for nitrogen, phosphorus and potassium for maize is the largest, the highest in potassium and phosphorus, and the best available nitrogen content is 60mg / kg , Available phosphorus content of 11mg / kg, available potassium in the 90-100mg / kg conditions, the output will be higher. Corn is a more drought-resistant crop, suitable for planting in arid areas, but the soil moisture content and organic matter content will also affect the yield of corn, organic matter content of the best in 10g / kg. Corn does not require much of the hardness of the soil itself, but if the hardness is about 60kg / cm2 units, it will make the corn grow better and increase the yield. There was a positive correlation between the yield of maize and the contents of N, P and K in the soil, the content of organic matter, and the water content, and it was not much correlated with the pH value and the wallpaper of solid and gas, and had little correlation with soil hardness Some areas are negatively correlated.

Key Words:aeolian sandy soil；plow layer；corn；yield

1 引言

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