【摘 要】
:
为筛选出凤冈县青贮玉米的最佳栽培方式,以青贮玉米品种裕玉207为试验对象,进行育苗移栽、人工点播和机械化直播栽培方式对裕玉207的影响试验。结果表明:青贮玉米裕玉207产量
论文部分内容阅读
为筛选出凤冈县青贮玉米的最佳栽培方式,以青贮玉米品种裕玉207为试验对象,进行育苗移栽、人工点播和机械化直播栽培方式对裕玉207的影响试验。结果表明:青贮玉米裕玉207产量以育苗移栽的最高,达5360 kg/667m^2,但纯收入最低,投产比最低。机械化直播的产量其次,为4920 kg/667m^2,但纯收入最高,达1493元/667m^2,比育苗移栽高155元/667m^2;投产比最高,达1∶3.2。人工点播的产量最低,但纯收入比育苗移栽高60元/667m^2。
其他文献
In this paper, we surveyed the development of maximum-entropy clustering algorithm, pointed out that the maximum-entropy clustering algorithm is not new in esse
Reuse is viewed as a realistically effective approach to solving software crisis. For an organization that wants to build a reuse program, technical and non-tec
Based on nonuniformly spaced L-shape array, a novel algorithm using ESPRIT and integer search is proposed to estimate the frequency, two-dimensional angles of a
通过聚焦美日两国的标准机制、专利的科技创新转化的国家政策、产学研机制方面研究,分析案例分析其在创新技术转化中的作用,提出技术转化中标准与专利结合的路径,为我国提高