查询词典 summer fallow

Summer fallow is the best method of destroying weed s.

夏季休耕是消灭杂草的最好办法。

Summer fallow is the best method of destroying weeds.

夏季休耕是消灭杂草的最好办法。不适合

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。

Summer fallow is the best method of destroying weeds.

夏季休耕是消灭杂草的最好办法。

Summer fallow is the best method of destroy ing weeds.

夏季休耕是消灭杂草的最好办法。

The results showed that the storage effect of water in the period of summer fallow was related to the precipitation.

结果表明，休闲蓄水作用主要取决于降水量，降水少，休闲效果突出。

Field trials were carried out to study the effects of summer fallow on water storage and NO-3-N accumulation in soil profile and the follow crops.

试验研究夏季休闲对陕西省关中地区中等肥力的红油土壤蓄水、硝态氮(NO-3-N)累积及其对后季作物的影响。

The experiment of soil moisture conservation in summer fallow land in the years of1983～1984 indicated that the method to mulch.

1983年和1984年进行的夏闲地保墒方法试验表明，采用麦糠或麦草覆盖的方法可以在0～2m土层多保蓄土壤水分54～64mm。

The results showed that: planting two crops in a year under the condition of 640 mm annual mean rainfall in the Loess Plateau conduced to the substantial use of solar and water resources in summer fallow, the biomass yield, economical yield and water use efficiency was improved in different degrees, and the material cycle was enhanced.

结果显示：在黄土高原东南部年降雨量达640 mm左右的旱作农田，发展&一年二熟&种植能较好地利用夏闲期的水热资源，不同程度地提高了全年的生物产量、经济产量、水分利用效率，加强了农田物质循环。

Results indicated that the rotation system of rice-vegetable with mid-late rice and the pattern of summer fallow significantly enhanced the activity of soil invertase and acid phosphatase, between which rice-vegetable pattern was superior to summer fallow.

结果表明，一季中晚稻的稻菜轮作模式和休闲轮作模式明显提高了土壤蔗糖酶和酸性磷酸酶的活性。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了