【摘 要】
：
八五三农场油菜高产栽培限制因素及对策孙永德，李徒远，王本延，谢斌，杨彩英，叶淑英（黑龙江省八五三农场）发展油菜生产是我场面向市场经济，调整种植业结构，获得农业高产、优质、高效的重
论文部分内容阅读
八五三农场油菜高产栽培限制因素及对策孙永德，李徒远，王本延，谢斌，杨彩英，叶淑英（黑龙江省八五三农场）发展油菜生产是我场面向市场经济，调整种植业结构，获得农业高产、优质、高效的重要途径。但近几年来，我场油菜种植面积增长不快，单产不高，总产不稳，效益不...
Limiting Factors and Countermeasures for High-yielding Cultivation of Rape (Brassica napus L.) in the Farmland of 853 Sun Yongde, Li Zuoyuan, Wang Benyan, Xie Bin, Yang Caiying, Ye Shuying (Heilongjiang Province 853 Farm) The development of rapeseed production is a field-oriented market economy. High yield, high quality, efficient and important way. However, in recent years, my field of rapeseed growing area is not fast, yield is not high, the total output is not stable, the benefit is not ...
其他文献
为研究宽带多输入多输出(multi-input multi-output,MIMO)电力线通信(power line communications,PLC)信道的随机特性,提出了一种基于多导体的MIMO-PLC随机参数信道模型。在
为揭示板栗雄花‘败育’的生理机制,本试验以三年生雄花‘败育’板栗为试材,以可育品种(系)‘燕龙’、‘燕胜’为对照,系统研究了雄花形态、生长动态和解剖学特性以及雄花序
Circadian rhythms are endogenous oscillations with a period of about 24 h driven by a circadian clock.So far,variable oscillators have been found in insects.To
Ongoing climate change affects various aspects of an animal’s life,with important effects on distribution range and phenology.The relationship between global w
黄冠梨是以雪花梨与新世纪杂交培育而成的优良新品种，其因果肉细腻、果形端正、果实具有香气、品质上乘深受消费者青睐。目前已经在河北、北京、山东、山西、河南、江苏等省（市
Tetragonisca angustula is one of the most widespread stingless bees in the Neotropics.This species swarms frequently and is extremely successful in urban enviro