1) no-tillage with straw returning
稻草还田免耕
1.
Paddy soil samples were collected in layers (0-5, 5-12, and 12-20 cm) during rice growth period to investigate the characteristics of the N forms and N-transforming bacteria in the soil profile under different tillage patterns (no-tillage with straw returning, NTS; conventional tillage with straw returning, CTS; no-tillage, NT; and conventional tillage, CT).
在水稻不同生育期分层采集稻田土壤剖面样品,研究不同耕作方式(常耕CT、免耕NT、稻草还田常耕CTS、稻草还田免耕NTS)、不同土层稻田土壤的氮素(N)形态及氮素转化菌特征。
2) free-plow rice paddy
稻田免耕
1.
Potato in free-plow rice paddy during autumn of 2007 in zhijiang of Yichang was planted as an example project,the area reached 36.
宜昌市于2007秋在枝江市示范种植稻田免耕稻草全程覆盖秋马铃薯36。
4) No-tillage with straw
稻草免耕
5) rice straw return
稻草还田
1.
Yield effect of rice straw return depended on N fertilizer quantity,straw quantity and sorts of crop.
稻草还田(土)的产量效应因氮肥水平、秸秆施加量和作物不同而异。
6) Straw incorporation
稻草还田
1.
Field studies were conducted to investigate effects of rice straw incorporation and nitrogen application models on process of nitrogen uptake by rice paddy ecosystem and fertilizer-N use efficiency in the double rice cropping system.
采用田间试验研究了稻草还田环境下施N模式对稻田生态系统N素吸收量及N肥利用率的影响。
2.
To investigate the effects of rice straw incorporation and nitrogen application models on nitrogen supplying capacity of soils,nitrogen using efficiency and rice productivity in the double rice cropping systems,field experiments were conducted on a farmer s field in Taojiang County in April of 2003,using split-plot design with two main treatments,three subplot treatments and eight replications.
结果表明,稻草还田改善了土壤的供氮能力,不论在背景氮较低的砂性土壤上还是在背景氮较高的粘性土壤上,稻草还田配施减量氮肥(N1、N3处理全年施氮量180kg。
补充资料：免耕播种机
免耕播种机
no-tillage seeder
免耕播种机(no·ti一lage seeder)在未经耕整的茬地上播种的机具。亦称直接播种机(directseeder)。通常在播种的同时进行施肥和施洒除草剂、农药等作业。 免耕播种机是在20世纪60年代，随着各国对免耕农业的重视而发展起来的(见少耕作业机械化)。它在茬地上进行播种作业时，能达到切断残茬搜盖层，松出一条宽约2.5一5厘米，深度与作物要求播种深度相当的播种带，按作物要求的行、株距和深度播人种子并保证种子与土坡的良好接触，适当压实土壤;增加某些工作部件，能一次完成如施肥、施除草剂和杀虫剂等多项作业。 免耕播种机的工作部件配置，是在开沟器的前方安装波纹圆盘刀或凿形齿作为破茬部件，切断地面残茬，并形成一条5厘米宽的播种带，施肥开沟器在一侧开出施肥沟，并将肥料施在侧下方，播种用开沟器跟踪破茬部件所开出的沟，按播深要求形成种沟，将种子均匀地播入种沟内，然后由施药器喷洒农药，由镇压夜土轮夜土镇压，完成全过程。 免耕播种机的多数部件与传统播种机相同。不同的是需要配里能切断残茬的破茬工作部件。常用的切茬开沟器有三种类型:①波纹圆盘刀。装在双圆盘开沟器之前，具有5厘米波深的波纹，其周边的波纹切刀，具有良好的切茬人土性能.能开出5厘米宽的小沟，然后由双圆盘开沟器加深，双圆盘开沟器两侧的橡胶限深轮，能保证形成深浅一致，并开出整齐的种沟，使种子能与土壤接触良好，为出苗创造条件。②凿形齿或窄锄铲式开沟器。结构简单，人土性能好，但容易堵塞。③窄旋转松土器。有较好的松土、碎土性能，需由动力翰出轴带动，结构复杂。(首南宏)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条