| 1. | Experimental study and utilizes of straw and remnant stubble covering technology
秸秆残茬覆盖技术试验研究与运用 |
| 2. | On the verge of the hour the heads of a group of children , of ages ranging from six to fourteen , rose above the stubbly convexity of the hill
快到十一点的时候，一群年从六岁到十四岁的小孩子，从山坡上一块满是残茬的高地上露了出来。 |
| 3. | Description : alfa - alfa integrated in the no - till system . as the crop remains in place during 3 - 4 years , various cover crops are intercropped o keep enough residue cover . epagri
免耕种植的紫花苜蓿作物残茬可以在田里保持3 4年，不同作物间作提供了足够的残茬覆盖。 |
| 4. | The pale and blasted nettle - stems of the preceding year even now lingered nakedly in the banks , young green nettles of the present spring growing from their roots
去年剩下的灰白色的荨麻的残茬，现在还光秃秃地留在山坡上，今年春天新的绿色尊麻正在从它们的根部长出来。 |
| 5. | Description : the soil covers is not sufficient to stop erosion ; nor are the physical structures . the only solution is to find appropriate crops to produce enough residues to favour infiltration
土表覆盖不足不能够阻止侵蚀、改变土壤结构。只有寻找合适的、能够生产足够残茬的作物，才有利于水份的渗透。 |
| 6. | Due to the detrimental effects of soil disturbance , fertilization of perennial forage crops , established pastures , and silviculture systems ; are obviously highly dependent upon surface application on residue covered soil
在多年生牧草、牧场和造林体系上，由于翻动土壤会产生不利影响，施肥显然主要是在有残茬的土壤上表施。 |
| 7. | Because no tillage and minimum tillage reduce erosion and concentrate nutrients in the surface soil just below the residue cover , micronutrients generally are less often deficient than under conventional tillage
由于少耕和免耕减少了水土流失，同时把养分富集在植物残茬覆盖下的土壤表层，所以，与传统耕作制相比，少耕和免耕一般不易发生微量元素的缺乏。 |
| 8. | Further , research clearly shows that as soil nutrient levels are maintained , as crop yield levels are increased and more residues are returned to the soil , productive capability continues to increase and the natural resource of the soil is protected
再者，研究清楚地表明，如果保持住土壤肥力水平，作物产量增加，更多残茬还田，生产能力会持续上升，天然土壤资源也得以保护。 |
| 9. | The type is temporarily called root - no - tillage with only the root left in soil and direct drilling ; sowing directly and placing the past plant stalk orderly over the soil is called mulch - no - tillage . they are both of the content when refers to no - tillage generally and are adapted to keep moist in or keep from soil erosion in drying land
作物收获后，作物地上部被从地表带走，地下部的根系等原位保留，直接播种的免耕方式暂时称为残茬免耕；直接播种，并将前作地上部有秩序地平铺在地表进行覆盖的免耕称为覆盖免耕。 |
| 10. | ( 2 ) after statistical experiment on color indexes of weed images which were acquired in various illumination intensity , soil humidity and remains coverage , it pointed out that hue and relative color index are insensitive to illumination intensity , soil humidity , remains coverage and shadow , hue and excess green have a distinct contrast between plant and non - plant , but can not be used to identify corn and seed
( 2 )利用自行开发的aoi (感兴趣区域)工具，通过对不同土壤湿度、光照强度和残茬覆盖率下的杂草图像进行颜色指数测定与分析，指出色度及过绿特征对光照强度、土壤湿度、残茬覆盖率、植物阴影的影响不敏感，且在植物与非植物之间存在足够的对比度，但不能用于玉米与杂草，或阔叶杂草与窄叶杂草的识别。 |
