Weeds Investigation of Untilled Oilseed Rape Field with Rice Stubble in Guizhou 贵州省稻茬免耕油菜田杂草的发生情况
The Effect of the Continuous Potato Untilled Mulch Cultivation Pattern on Soil Physico-chemical Properties of Rice Fields 稻田马铃薯连续免耕栽培对土壤理化性状的影响
In the Hebrew scriptures, a year of rest to be observed by the Israelites every50th year, during which slaves were to be set free, alienated property restored to the former owners, and the lands left untilled. 五十年节,禧年犹太教《圣经》中以色列人遵守的每50年一次的休息年,这一年中奴隶获得释放,抵押出去的土地归还原主,土地休耕。
Weed control effect of paraquat in untilled fields and its influence on the light and yield of rapeseed 百草枯的控草效果及对光照和油菜产量的影响百草枯与草甘膦对蕨类植物的控制作用
The weed control effects of paraquat and subsequent dynamics in untilled rape fields, as well as the influence of paraquat on the sunlight and crop yield were studied to evaluate the application prospect of paraquat and establish a weed management system in untilled rapeseed fields. 为明确百草枯在免耕油菜田的应用前景,建立免耕油菜田的杂草管理体系,研究了百草枯对免耕油菜田杂草的控制作用及该药剂对田间光照和油菜产量的影响。
The Affection on Root System of Maize with Untilled and Covered Stalk Cultivation 免耕秸秆覆盖对玉米根系的影响
A new type punch planter for use in untilled soils 新型冲孔式免耕播种机的研制及应用
The density of earthworm in field experiment have a descending trend of compost plot> control plot> chemical fertilization plot> untilled plot. 田间实验蚯蚓总的数量为堆肥区>对照区>化肥区>原貌区。
The results showed that when the cultivation disk groups swerve toward the untilled soil, the side force of the tail wheel descend gradually but the maximum or minimum value was not achieved within the limited region. 结果表明:当耕作圆盘组向未耕地偏转时,尾轮侧向力呈逐渐下降趋势,在限制域内未出现峰值或谷点。