When one comes to more tractable land at lower altitudes, problems of permanent pasture improvement are not nearly so difficult . 在海拔较低的易于耕作的土地上，改进永久草场的问题并不很困难。
The actual returns from fertilizer on a particular farm vary with soil type, management system and composition of the sward . 一个具体农场施肥的实际效益随着土壤类型，耕作制度和牧草地成分而异。
Whenever one of the brangwens in the fields lifted his head from his work, he saw the church-tower at ilkeston in the empty sky . 在田野里耕作的任何一个布兰文家的人一抬头，便会看见那座教堂塔座落在依尔凯斯顿那碧净的天空下。
2006 china - canada conservation agriculture forum 2006中加保护性耕作专家论坛公告
The view of extending protected cultivation technology 推广保护性耕作技术之我见
Conservation agriculture development strategies for china 中国保护性耕作发展战略
Many modern machines have revolutionized farming 许多现代机器革新了耕作方法。
Study on controlled traffic with conservative tillage 固定道保护性耕作的试验研究
Equipment for conservation tillage and direct seeding 保护性耕作与免耕播种机具
Experimental research on protective tilling implements 保护性耕作法机具的试验研究
