Effect of Cropping Systems on the Structure of the Ploughed Layer Results of a Long-Term Experiment and Modeling

机译：裁剪系统对长期实验和建模犁过层的结构的影响

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A field experiment was conducted (1989-1997) in northern France to evaluate the effects of cropping systems on the structure of a loamy soil. Three cropping systems involving different crop rotations (based on winter wheat, pea, rape, maize and sugar beet) and different timetables for cultivation (early or late sowing, early or late harvesting) were studied. Soil structure was evaluated by a morphological analysis of the ploughed layer and defined by the proportion of the soil profile with a massive structure and no visible macropores. Soil compaction, which created the massive zones, occurred mostly during maize and sugar beet harvesting late in the season, in wet conditions. The change in the soil structure over time, i.e. the change in the proportion of massive zones, varied greatly, depending on the cropping system and on the climatic conditions during the year. A model simulating the change in soil structure over time was tested. It has to be improved to better take into account the initial soil structure and the soil loosening during ploughing. It is a useful tool for analyzing the changes in soil structure as a function of cropping systems and so design sustainable tillage systems.

机译：在法国北部进行的田间实验（1989-1997），以评估种植系统对壤土结构结构的影响。研究了三种涉及不同作物轮换的种植系统（基于冬小麦，豌豆，强奸，玉米和甜菜）和种植的不同时间表（早期或晚期播种，早期或晚期收获）。通过犁过的层的形态分析来评估土壤结构，并由土壤曲线与大规模结构和不可见的大孔的比例限定。在季节晚期的玉米和甜菜收获期间，在玉米和甜菜收获期间发生了巨大区域的土壤压实。土壤结构随时间的变化，即大规模区域比例的变化大大变化，这取决于裁剪系统和年内气候条件。测试了模拟土壤结构变化随时间的模型。必须改进，以更好地考虑初始土壤结构和耕作过程中的土壤松动。它是一种有用的工具，用于分析土壤结构变化作为裁剪系统等设计可持续耕作系统。

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《International Soil Conservation Organization Conference》|2002年||共5页
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G. Richard; H. Boizard; J. Roger-Estrade;
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中图分类水土保持;
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Effect of Cropping Systems on the Structure of the Ploughed Layer Results of a Long-Term Experiment and Modeling

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