播種 (作物栽培措施之一) sowing; seeding◇播種季節 seedtime; season of sowing; 播種量 seeding rate; 播種密度 density of crop; thickness of sowing; 播種面積 area under crops; sown area; seeded area; 播種深度 depth of seeding; 播種術 seedage; 播種者 sower; disseminator
Study on co - effect of fertilizing rate , seeding rate and planting date of winter wheat northernmost planting 播種量和播期的組配效應研究
Effects of sowing norm and fertilizer amount on seed productive characteristics of poa pratensis 播種量和施肥量對草坪型草地早熟禾種子生產特性的影響
The effect of kentucky bluegrass spring sowing rate on the turf establishment quality in xining district 西寧地區春播草地早熟禾播種量對草坪建植質量的影響
Allied to the breeding programmes are investigations into other associated techniques such as time of planting and seeding rate 與育種項目密切聯系的是進行相關技術的調查,如播期和播種量。
When the number of basic seedlings with normal sowing date was 12 * 104 per mu , the profit was highest . while under the condition of late sowing , basic seedlings 24 * 104 per mu could result in the highest profit 對于正常播期的播種量以12萬/畝基本苗時,經濟效益最高;對晚播小麥的基本苗控制在24萬/畝時,經濟效益達最高。
The virginia wheat myr provided the basis for establishment of a number of best management practices ( bmps ) for higher yields including time of n application , row - widths , varieties , seeding rates , use of growth regulators , use of fungicides and insect scouting 弗吉尼亞小麥最高產量研究提供了建立許多能獲得高產的最好管理措施( bmp ) ,包括施肥期、行距、播種量、使用生長調節劑、使用除真菌劑和蟲情監測。
The sub - model for design of population density was developed according to the principle of determining boll number from target yield , fruit node from boll number , fruit branch from fruit node and population density from fruit branch by integrating the effects of sowing date , cutout date , effective temperature accumulation above 12 , variety type , and fertilizer and water management levels . sowing rate was then decided by integrating the effects of different soil water and salt contents , ph , temperature and sowing style on seedling emergence rate with relative weight method 基于“以產定鈴、以鈴定節、以節定枝、以枝定苗”的原理,同時考慮播種日期、打頂日期、 12的有效積溫、品種株型特性、肥水管理水平差異等因素來確定適宜的種植密度;在此基礎上,應用相對權重法計算土壤含水量、含鹽量以及整地質量和播種方式等多個生態環境因子對出苗率的綜合影響,進而確定播種量。
Based on the sum - up and abstraction of the relationships of rapeseed growth characters with ecological environment , cultivar type , production condition and yield target , a dynamic knowledge model was developed by using knowledge engineering and system modeling method , which could be used for designing a suitable sowing and transplanting scheme of different rapeseed varieties under different spatial and temporal environments 摘要運用知識工程和系統建模方法,在總結、歸納和提煉油菜生長發育與生態環境、品種類型、生產技術水平和產量目標關系的基礎上,建立了具有時空適應性的油菜播栽方案設計的動態知識模型,可用于精確定量不同環境和生產條件下油菜品種的適宜播期、基本苗、播種量和移栽方案。