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在美国太平洋西北部内陆干旱少雨（年降雨量少于 ３００ ｍｍ）地区实行小麦—休闲轮作。在小麦低产时，作为控制侵蚀的地表残留物很难保存到下一个休闲期。细叶钾猪毛菜是一种阔叶杂草，在作物低产年，当小麦收割后，它经常产生比小麦更多的干物质。在４ａ的研究中，于休闲期对采取３种不同耕作措施试验地的细叶钾猪毛菜残留物的覆盖效果进行了测定。耕作措施包括：１）传统耕作。２）少耕（除草剂和耕作结合）。３）延迟少耕（除草剂和延迟耕作结合）。研究结果表明，在细叶钾猪毛菜残体大量存在且作物残留物少的情况下，猪毛菜具有减轻侵蚀作用。
Wheat - fallow rotation is carried out in inland arid drylands (annual rainfall of less than 300 mm) in the northwestern Pacific Ocean of the United States. In low-yielding wheat, surface erosion as a control of the surface is difficult to preserve until the next leisure period. Scutellaria Potamogeton is a broadleaf weed that often produces more dry matter than wheat at low crop yields when the wheat is harvested. In the study of 4a, the effect of covering the residues of Potentillen gossypii collected from three different tillage practices during the fallow period was determined. Farming practices include: 1) Traditional farming. 2) less plowing (herbicide and tillage combined). 3) delay less tillage (combination of herbicide and delayed tillage). The results showed that Salsola reduces the erosion in the presence of a large amount of Salicornia albiflorus residue and few crop residues.