crop density 中文意思是什麼
crop density
解釋
林作密度-
Want to have consideration to findings, circumstance of fall victim of density of the mouth that be like bug, crop ( index of be murdered rate, be murdered, loss late ), computation of result of test of field drug effect
對調查結果要進行計算，如蟲口密度、作物受害情況（被害率、被害指數、損失率） 、田間藥效試驗結果計算等。 -
Effect of pruning on light density, yield and biomass of crops in poplar - crop intercropping system
國外混農林業系統中林木與農作物的相互關系研究進展 -
Based on cultivating experiment of corn from 1996 to1999, the field researches on corn in arid mountainous area of changping was made on the sowing period, maize varieties, density of crop, methods of fertilizer application and mode of planting. furthermore, it is in this article that the system of cultivation techniques of high yield corn is discussed
1996至1999年進行多年玉米旱地栽培試驗，對昌平山區旱地玉米的播期、品種、播種密度、施肥措施、種植方式進行了分析研究，探討了昌平山區旱地玉米的高產栽培技術體系 -
The most important factors affected crop yield and economics in these experiments were : rape : population density ; early rice : interaction of p k ; late rice : rate of nitrogen application ; wheat : variety ; midrice. interaction of n k
這些試驗中影響作物產量最重要的因素是：油菜：種植密度；早稻：磷鉀交互作用；晚稻：氮肥施用量；小麥：品種；中稻：氮鉀交互作用。 -
Ploughing deeper and corn residues might promote formation of soil aggregated structure, decrease soil bulk density, relax solum, decrease soil porosity, raise soil permeability, improve soil structure and holding - water capability, create better soil biology condition for growth of crop, and coordinate water, fertilizer, air and heat etc. to prevent the fertility deterioration of the corn belt phaeozem and ameliorate soil, it is need to reform tillage and fertilizer application for the corn belt phaeozem in the central part of jilin
針對吉林玉米帶黑土土壤退化現象，從黑土玉米的耕作制和施肥制的改革入手，並結合農村現有機械和技術水平，採用玉米「輕主重輔」三三耕作制和玉米「一穩二減三補」施肥技術，提出吉林玉米帶黑土土壤調控技術體系。 -
Initial growth of crop stands can be easily obtained by an increase of planting density or by application of increased level of basal fertilizers
作物苗的早期生長很易由提高種植密度或增施基肥獲得。 -
Greenhouse is the important part of installation agriculture. crop production in domestic and overseas greenhouses shows that advanced automation and management system for greenhouse will improve the efficiency of agriculture production. in this paper, intelligent greenhouse, as the focus of agricultural greenhouse field, is studied, and a measure and control system which can control parameters of temperature, humidity, illumination and co2 density of greenhouse is designed
溫室是設施農業的重要組成部分，國內外溫室種植業的實踐經驗表明，提高溫室的自動控制和管理水平可充分發揮溫室農業的高效性，本文主要對當今農業溫室的研究熱點-智能溫室系統進行研究，設計了一套能實時控制溫室內溫度、濕度、光照以及co2濃度等多參數的測控系統。 -
The advantages of plantain at high population density include potential to increase yields significantly, better crop cycle planning to harvest during best market conditions, optimum use of land because one hectare of high density plantain can produce as much as 3 - 5 hectares of conventional planting, high production of good quality corms used as seed for the next cycle and intensive management resulting in a lower incidence of pests, diseases and weeds
大蕉密植的優勢在於：有顯著的增產潛力，有較好的生產周期以適應最佳市場條件，能高效利用土地（密植1公頃相當于通常的3 ~ 5公頃） ，可生產出可作為下季種子的大量優質球莖，集約管理可減少病、蟲、草害的發生。 -
The harms of soil compaction represented briefly as soil bulk density and penetration resistance increased, macroporosity decreased, soil physical, chemical and biological properties deteriorated, which effected on crop growing and soil structure degradation, and has become one of the principal obstacle factors for sustainable development of agriculture
土壤機械壓實危害主要表現在土壤容積質量和機械阻力增加，大孔隙減少，土壤物理、化學、生物性狀惡化，進而影響作物的生長發育，土壤結構發生退化，已成為當前制約農業可持續發展的障礙因素之一。
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