Results 61 to 70 of about 11,115 (161)
, 2018 为探索低桩机割再生稻高产途径,研究了水稻品种佳辐占再生分蘖节根的萌发特性.结果表明:头季低桩机割后再生季成穗分蘖为倒4、倒5节分蘖及其子蘖;倒4、倒5节分蘖有4个发根节,子蘖有3个发根节,每节萌发5~8条节根.各节节根萌发有恒定叶龄期:当第n节叶片开始伸长时,第n-3节节根开始萌发(节根原基突破茎秆表皮);当第n节叶片刚抽出时(该叶伸长近半),第n-3节少数节根显著伸长;当第n节叶片抽出70%时(该叶定长),第n-3节节根萌发数稳定.倒4、倒5节分蘖在头季机割后约10d,子蘖在头季机割后约20d ...
俞道标 +7 more
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The Impact of Mixed Application of Modified Straw Biochar and Organic Fertilizer on Soil Water Retention and Fertility Maintenance in the Loess Hilly Dry Area [PDF]
[Objective] This study aimed to investigate the effects of different modified corn straw biochars on the water retention and fertilizer conservation capacity of arid loess soil and their effects on crop growth.
CHANG Fangling +5 more
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Shuitu Baochi Xuebao, 2019 采用营养液培养生物学模拟方法，研究了喷施8种不同的叶面硅调理剂对苗期水稻累积总砷（As）和砷形态的影响。结果表明，叶面施用硅调理剂可降低水稻根和茎叶中砷含量，其中叶面施用Na2SiO3+鼠李糖脂处理（Si6）的水稻根系和地上部砷含量最低，分别为10.04，0.31 mg/kg，比对照降低25.35%和33.10 ...
张世杰 +4 more
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Pollution Status of Degredation and Tolerance Mechanism of Contaminants in Mangrove Plant Kandelia candel (L.) Druce in Xiamen Coastal Area [PDF]
, 2010 红树植物是热带、亚热带河口优势植物种，是该生态系统的重要初级生产者，是维护海岸生态平衡的重要生态系统，对维护海湾河口地区的生态平衡起着十分重要的作用。河口区域经济与工农业的发展导致大量的污染物进入河口红树林湿地。本研究针对厦门海域九龙江口红树林湿地PAHs与重金属的污染现状以及受高强度人类活动影响而成为九龙江河口红树林湿地污染源之一的城市内湖-厦门筼筜湖重金属污染，研究了城市内湖-厦门筼筜湖重金属污染与潜在生态风险，典型多环芳烃（菲、蒽和芘）在红树植物根际消减行为，典型重金属（Cu、Pb、Zn、Cd ...
卢豪良
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Strategies of high efficiency water usage promoted by microbial remediation in coal mining areas of western China [PDF]
The fragile ecological environment in the western coal mining areas of China, compounded by intensive mining activities, has led to water and soil erosion, soil degradation, and damaged root systems.
Chao WU +4 more
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Gaoya dianqi, 2011 提出了基于信号波形特征值和断路器机械动作时序性关系,反映断路器各部件机械特性的高压断路器机械状态诊断新思路。通过介绍根据该思路研制的高压断路器机械状态自动诊断辅助系统的系统原理、系统构成、运行效果以及进一步的扩展试验,表明基于特征值的诊断算法理论,具有反映弹簧操动机构机械状态的普遍意义。
钟家喜, 李保全, 李亚红
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Shuitu Baochi Xuebao, 2021 为揭示生长在不同地下水埋深和土壤质地的胡杨实生幼苗根系的不同生长适应策略，以胡杨实生幼苗为试验材料，设置30（A1），60（A2），90 cm （A3）3个地下水埋深处理，砂土（B1）、砂壤土（B2）和黏壤土（B3）3种土壤质地处理，研究了塔里木河流域地下水埋深和土壤质地对胡杨（Populus euphratica）实生幼苗根系生长及构型的影响。结果表明：（1）地下水埋深的增加，可促进胡杨幼苗根系形态的发育和根系生物量的积累，胡杨幼苗扎根深度、根系总长度 ...
丁晓雪, 赵成义, 曾勇, 马晓飞
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Progress in developments and applications of the HYDRUS model and associated coupling model packages [PDF]
HYDRUS model is widely used in agricultural irrigation and pollution transport because it can comprehensively consider the movement of water, heat, and pollutants in the soil-plant-atmosphere system.
Bei ZHANG +5 more
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Spatial relationship between root system and soil properties of mature and densely planted Kuerlexiangli pear under long-term strip fertilization [PDF]
[Objective] Kuerlexiangli pear (Pyrus sinkiangensis Yü et Lu.) is the main cultivar in Southern Xinjiang. In recent years, the main trunk dense planting pear orchard has developed rapidly and entered the peak fruiting period.
AN Shijie +9 more
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Shuitu Baochi Xuebao目的为研究不同耕作模式对松嫩平原黑土区大豆根系生长发育和根系分泌物分泌速率的影响，明确不同耕作模式通过改变土壤理化性质和根系性状影响作物产量的差异性传递过程。方法以东北黑土区大豆品种为试验材料，设置免耕秸秆覆盖（no-tillage straw mulch， NTS）、免耕（no-tillage， NT）、深耕（seep tillage， DT）和常规耕作（conventional tillage， CK）4种耕作模式，研究其对土壤理化性质、大豆根系型态及作物产量的影响。结果1 ...
杨宏泽 +5 more
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