可耕作的

Or, are all the areas that are farmable being farmed?

或者，是否所有可耕作的农田都被耕作了？

Clean water and cultivable lands have become the most important strategic resource in 21st century, water and soil is the foundation of the life. Its the shared responsibility of all the people in the world to protect soil and water resources.

洁净的淡水和可耕作的土壤已成为21世纪人类最为重要的战略资源，水是生命之源，土是生存之本，保护水土资源是世界各国人民的共同责任。

The results showed that different tillage patterns could improve soil water storage,the soil laer of no-tillage was covered by straws between 0 to 20 cm held water(4.542±0.894)×10~5 L/hm~2;Under no-tillage with full-straw mulching average soil temperature at 0～20 cm decreased...

结果表明：不同的保护性耕作措施均可提高土壤水分含量，其中留茬旋耕处理的土壤贮水量最高，达(4.542±0.894)×105L/hm2；在玉米播种前期及苗期，免耕覆盖处理降低土壤温度1~2℃，而整个生育期留茬旋耕处理与传统耕作处理的土壤温度相近；苗期，留茬旋耕处理的玉米株高、根长、鲜重和干重均优于其它处理，促进了玉米的生长发育；不同的保护性耕作措施均可提高玉米的产量，与传统耕作相比可增产

The results showed that different tillage patterns could improve soil water storage, the soil laer of no-tillage was covered by straws between 0 to 20cm held water (4.542±0.894)×10^5L/hm^2 Under no-tillage with full-straw mulching average soil temperature at 0~20cm decreased 1~2℃ during early corn growing period; In early season of corn growth, minimum-tillage with 1/3-straw mulching would promot the growth; Compared with the conventional tillage, economic yields could increase

结果表明：不同的保护性耕作措施均可提高土壤水分含量，其中留茬旋耕处理的土壤贮水量最高，达(4.542±0.894)×10^5L/hm^2；在玉米播种前期及苗期，免耕覆盖处理降低土壤温度1~2℃，而整个生育期留茬旋耕处理与传统耕作处理的土壤温度相近；苗期，留茬旋耕处理的玉米株高、根长、鲜重和干重均优于其它处理，促进了玉米的生长发育；不同的保护性耕作措施均可提高玉米的产量，与传统耕作相比可增产

There is not much arable land on the side of a rocky mountain.

岩石众多的大山脚下没有多少可供耕作的土地。

Therefore, the general said: in soil bulk density reached 1.3g/cm3 or 1.4g/cm3 above or at the beginning of the areas of conservation tillage, in order to break the traditional farming for many years to form the bottom of the plow, the first year can be Subsoiling.

所以一般认为：在土壤容重达到1.3g/cm3或1.4g/cm3以上时或在开始进行保护性耕作的地区，为了打破多年传统耕作形成的犁底层，第一年可进行深松。

Conventional tillage with bare ground, conventional tillage with straw incorporated and no-tillage with straw mulch were studied in the Hexi corridor of Gansu provience. The result showed: on summer fallow NTS stored soil water more than CTB and CTS by 30.62mm and 23.91mm, respectively; the winter storage irrigation quotas should be reduced to 900~1350 m^3/hm^2 on winter fallow; evaporation controlling rate arrived 38.1% and 7.3% at winter storage irrigation quotas 975m^3/hm^2 and 2100m^3/hm^2, respectively; NTS did not reduce ET during the spring wheat growth stage; yields different between treatments was not significant.

对甘肃河西内陆河灌区采用常规耕作、秸秆还田和覆盖免耕技术的农田水分效应进行研究，试验结果表明：在夏季休闲期，覆盖免耕比常规耕作和秸秆还田多贮水30.62mm和23.91mm；冬季休闲期可将大定额的储水灌溉减少到975~1350立方公尺/hm^2；覆盖免耕抑制蒸发率在储水定额为975立方公尺/hm^2时达到最大值38.1%，而在2100立方公尺/hm^2时最小为7.3%；覆盖免耕在作物生育期并没有减少土坡耗水量；各处理产量之间没有显著差异。

Effect of water saving was studied under no-tillage with straw mulch, conventional tillage with straw incorporatedand conventional tillage on bare ground. The results showed that NTS increased soil water storage by 30.6 mm and 23.9 mm over CTS and CTB during summer fallow.

对免耕覆盖、秸秆还田和常规耕作在休闲期的节水效果研究表明：在夏季休闲期，免耕覆盖比常规耕作多贮水30.62 mm，比秸秆还田多23.91 mm；在冬季储水灌溉期间，可将储水定额从2 100 m3/hm2减少到600和975 m3/hm2。

Cultivation in an area where the amount of land available for cultivations is being reduced due, e.g.

在可耕种的土地不断缩减的地域进行的耕作。

Its main advantages are: 1 Ploughshares former can Geng Sada narrow, sharp-angle, and then a small field can be competent. 2, spiral Ploughshares high-speed rotation, tillage Shulan soil formation, may omit rake mud, soil and other pressure Suitu site preparation process. 3, spiral Ploughshares work will push the soil later, will pull the machine forward traction, it can effort can be smaller engine-driven. 4, the spiral Ploughshares work itself traction to overcome the original style, to break through resistance to the plow, the machine tray can be fitted with the lower part of farming feet deep mud paddy field. 5, the spiral Ploughshares put on the handling round, you can use the drive shaft Ploughshares handling round, 20-30 cm wide in the small mountain ridge or drive to complete removal. 6, according to the plane of principle, can also be designed as a multi-Ploughshares, or a variety of forms, suitable for large-scale farming machinery Plain.

它的主要优点是：1、犁头在前能耕狭田窄地，田尖地角，再小的田地都可胜任。2、螺旋犁头高速旋转，被耕泥土熟烂平整，可省去耙泥、压土等碎土整地过程。3、螺旋犁头工作时将泥土往后推，有将机器往前拉的牵引力，因此可以省力，可用较小的发动机驱动。4、由于螺旋犁头工作时本身有牵引力，克服了原式华犁的对闯阻力，在机器下部装上托盘就可耕作深泥脚水田。5、把螺旋犁头换上小搬运轮，就可利用犁头轴的动力驱动搬运轮，在20—30厘米宽的小山路或田埂上行驶完成搬运。6、根据该机工作原理，还可设计成多犁头或各种形式，适合平原的大型耕作机械。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失