蔬菜秧苗定植法

来源 :北京农业 | 被引量 : 0次 | 上传用户:gengxuetao
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
蔬菜秧苗定植法蔬菜秧苗定植,是指将适龄的壮苗栽入田间的过程,具体方法有三种:1.挖窝点水定植:按株、行距定点挖窝,在窝内栽苗并浇水,然后覆土平窝。若盖上肥料(如粪土)则效果更好。2.暗水定植:又叫开沟稳苗定植。按行距开沟,在沟内按株距摆放秧苗,然后在... Vegetable seedling planting vegetable seedling planting, refers to the age of strong seedlings planted into the field process, there are three specific ways: 1. Digging dens water planting: according to the strain, row spacing pit digging, planting seedlings in the nest and watering, and then cover the flat nest. If covered with fertilizer (such as dirt) is better. 2. Dark water planting: also known as ditch planting stable seedlings. According to the row spacing ditch, placed in the trench seedling spacing, and then ...
其他文献
流感和感冒流感的最大危害是引发并发症甚至危及生命。一般来说,流感表现为起病急骤、畏寒、高热、头痛、肌肉关节酸痛、全身乏力、鼻塞、咽痛和干咳,发烧在39℃以上,还会引
A model to represent multiple actuator failure cases is developed by polytopic concept.The design of passive fault-tolerant control (FTC) with considerations of
会议
公路桥涵设计规范中,建议采用拖拉机、汽车等代荷载来设计桥梁,以减少计算工作量。规范中的等代荷载表,仅适用于拖拉机、汽车的技术指标和布置图式,符合规范规定的情况。但
Precision analysis is an important task of the exoatmospheric endgame guidance.The conventional method Monte Carlo is time-consuming.Covariance analysis descrip
会议
色形味俱佳的早熟大粒巨穗葡萄新品系─—“9307”郭守华王钧毅(河北省昌黎农业技术师范学院园艺系066600)(山东省果树研究所271000)“9307”是1993年从多品种生产园中选出的早熟、大粒、丰产、优质的新品
Autogyro or gyroplane as the first rotorcraft and a type of classical V/STOL aerial vehicle has become a hot point in academia and industry.Progresses have been
会议
To achieve satisfactory pitch maneuverability under post-stall flight conditions with high angle of attack,standards for pitch agility evaluation are presented
会议
Multiple UAVs collaborative operation which has high-level of autonomy will be an important mode of the future war.Fuzzy Virtual Force is proposed to solve the
会议
High precision navigation is a key technique for unmanned aerial vehicles (UAVs) formation flight.A methodology for fusing data from inertial navigation system
会议
如今,很多人体力活动少,长时间低头,出门就坐车,让颈椎的压力骤增,年纪轻轻就开始和颈椎病打交道了。要想防治颈椎病,关键要从日常习惯做起。颈椎上承头颅,下接躯干,既是脊椎