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- Grain yields were improved by conservation tillage with straw cover or straw standing,and that of NPS20,NPS40,NS40,NS20,NSB40 and NSB20 were increased by 53.08%,46.59%,40.81%,19.93%,17.33% and 4.34% respectively compared with the CT. 结果表明;留茬覆盖免耕保护性耕作提高了春小麦的产量;NPS20;NPS40;NS40;NS20;NSB40和NSB20较CT分别增产53.;08%25;46
- conservation tillage with straw cover 覆盖免耕
- A thin mattress filled with straw or sawdust. 木屑床垫填满草杆或木屑的一床薄垫子
- The cottages are thatched with straw. 这些农舍均用稻草盖顶。
- No - tillage with straw mulch 免耕覆盖
- Effects of no tillage with stubble mulch on sowing and seedling of spring wheat in the Hexi Irrigation Area 河西灌区免耕秸秆覆盖对春小麦播种及出苗的影响
- The farmer piles a cart with straw. 农民在火车上装满稻草。
- Denitrification, on the other hand, can be very serious with a combination of no tillage and imperfectly drained soils. 硝态氮的淋失虽然在免耕制下稍高一些，但在夏季作物上，一般不是氮损失的主要途径。
- no-tillage with straw muleh 覆盖免耕
- The old man bedded down his horse with straw. 老人给马铺好了稻草，让马过夜。
- The man bedded down his horse with straw. 那个人使马卧在稻草上。
- The breeder bedded down the calf with straw. 饲养员铺了些稻草让小牛睡觉。
- The cart is piled high with straw. 大车上的稻草装得冒尖儿了。
- The farmer bedded the calf down with straw. 农夫铺了些草让小牛睡觉。
- Therefore, it is concluded that magnesium does not require special attention under no tillage. 所以，在免耕制下，不必对镁的状况给予特别的关注。
- Nitrate leaching, although slightly higher under no tillage, is generally not a major pathway of loss in summer crops. 实施免耕的初期，氮的生物固定明显，但随着时间的推延，这种作用逐渐消失，以至到了后期，与初期的情况正好相反。
- Typically, magnesium levels in soils under no tillage do not change materially from those under conventional tillage. 免耕和传统耕作制相比，土壤中镁的含量没有实质的变化。
- Application of phosphorus fertilizer to no tillage cropping systems appears to be complicated by the fact that it cannot be incorporated. 免耕耕作制下磷肥的施用似乎很复杂，因为此时无法将磷肥和土壤掺混。
- Immobilization effects are notable in the early years of no tillage, but with time they tend to disappear and even reverse themselves. 在所有作物上液氨都必须和土壤掺混（在条施时必须把缝隙封好）。
