您要查找的是不是：
- Rational crop rotation system for the Hexi Corridor 河西走廊粮、经、饲合理轮作模式的研究
- A rotation of personnel; crop rotation. 员工的轮流替换; 农作物的轮作
- rational crop rotation 合理的轮作
- A rotation of personnel;crop rotation. 员工的轮流替换；农作物的轮作
- A sensational buzz - zzzzzz. Crop rotation. 耸人听闻的嘈杂声,轮回的收成
- Crop rotation helps prevent soil erosion. 农作物轮作有助于防止水土流失。
- Crop rotation is the best way to increase output. 想提高产量，最好的办法是倒茬轮作。
- You understand crop rotation better than anyone I know. 你是我认识的人当中对庄稼轮作最了解的一个。
- Crop rotation makes a balanced demand on the fertility of the soil. 轮作可以平衡对土壤的肥力要求。
- Organic methods, which rely on crop rotation, manure and compost[1] in place of fertiliser, are far less intensive. 有机生产方式不讲究精耕细作，不使用化学肥料，主要依靠轮作、肥和混合肥。
- Organic methods, which rely on crop rotation, manure and compost [1] in place of fertiliser, are far less intensive. 有机生产方式不讲究精耕细作，不使用化学肥料，主要依靠轮作、粪肥和混合肥。
- Organic methods, which rely on crop rotation, manure and compost in place of fertiliser , are far less intensive. 有机生产方式不讲究精耕细作，不使用化学肥料，主要依靠轮作、肥和混合肥。
- After several years of crop rotation, the land became infertile and needed to be supplemented with organic matter. 土地经过多年轮种变的贫瘠, 需要补充有机质。
- Organic methods, which rely on crop rotation, manure and compost in place of fertiliser, are far less intensive. 有机生产方式不讲究精耕细作，不使用化学肥料，主要依靠轮作、肥和混合肥。
- This experiment researched spring wheat mutiple Melilotus suaveolens is a relatively good crop rotation. 四个处理中春小麦复播草木樨是相对较好的一组轮作作物。
- Saving money on fertilisers and pesticides helps farmers afford better seeds, and composting and crop rotation are improving the soil. 从化肥和杀虫剂上省下来的钱，可以买来更好的种子，堆制肥料、采用轮作耕种，都能使土壤得到改良。
- Crop rotation system and geographical factors determined the distribution of weed communities in main oilseed rape growing regions in Hubei Province. 轮作制度与地理因素决定了湖北省油菜主产区杂草群落的分布。
- The replacement of black fallow by a more diversified crop rotation, and the use of minimum and/or no-tillage technologies in lieu of conventional soil tillage. 用更加多样化的轮作代替秋耕闲地，以及使用最少和/或免耕法技术代替传统的土壤耕种。
- Control methods include genetic resistance, proper crop rotation, tillage practices to bury crop residues that promote disease development, and fungicides. 控制病害的方法包括：选抗病品种、合理轮作、把易发生病害的作物残体翻入土内、杀真菌剂的应用等。
- A Rational Crop Distribution in Different Climate Type 不同气候年景中的作物合理布局
