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本文介绍了测量直接播种机作业时种子在种沟内分布的两种新方法。根据测定的数据!提出了描述种子分布的三个参数,即种子沿深度方向分布的标准方差σ_d,种子沿横向分布的标准方差σ_w和各小区段种子平均播深变化的标准方差σ_r。通过在砂壤和粉壤两种土壤条件下几种开沟器的对比试验,得出了这三种参数与开沟器型式的关系,并根据这些关系对参加试验的几种开沟器作出了评价。@郭佩玉$本文介绍了测量直接播种机作业时种子在种沟内分布的两种新方法。根据测定的数据!提出了描述种子分布的三个参数,即种子沿深度方向分布的标准方差σ_d,种子沿横向分布的标准方差σ_w和各小区段种子平均播深变化的标准方差σ_r。通过在砂壤和粉壤两种土壤条件下几种开沟器的对比试验,得出了这三种参数与开沟器型式的关系,并根据这些关系对参加试验的几种开沟器作出了评价。
This article describes two new methods for measuring the distribution of seeds in a ditch during direct seeding operations. According to the measured data, three parameters describing the seed distribution are proposed: the standard deviation σ_d of the seed along the depth direction, the standard deviation σ_w of the seed along the widthwise distribution, and the standard deviation σ_r of the average seed depth of each section. Through the comparative experiments of several openers under the soil conditions of sandy soil and powder soil, the relationship between these three parameters and the opener type was obtained. Based on these relationships, several openers were tested The evaluation. @ Guo Peiyu $ This article describes two new methods for measuring the distribution of seeds in seed ditch during direct seeding operations. According to the measured data, three parameters describing the seed distribution are proposed: the standard deviation σ_d of the seed along the depth direction, the standard deviation σ_w of the seed along the widthwise distribution, and the standard deviation σ_r of the average seed depth of each section. Through the comparative experiments of several openers under the soil conditions of sandy soil and powder soil, the relationship between these three parameters and the opener type was obtained. Based on these relationships, several openers were tested The evaluation.