鲁东南茶区自浆化棕壤低产的成因与改良利用

鲁东南丘陵区是北方茶叶的主产区,是江北绿茶生产的重要基地,是临沂市40多年来“南茶北引”成功的典型范例,享誉海内外的日照绿茶、莒南玉芽、临沭玉山就产自该区。该区白浆化棕壤是鲁东南茶区的主要构成土壤,是该区特有的一种地域性土壤类型,     

鲁东南丘陵区茶园土壤养分演变趋势的研究

在鲁东南丘陵区茶园土壤上选择有代表性的60个土样进行调查采样,在测定分析的基础上,研究了茶园土壤动态变化趋势,结果表明,茶园土壤养分含量、土壤PH随时间的增加呈递增趋势,但差别较大,这值得引起人们的关注.     

鲁东南棕壤区茶园土壤养分演变趋势研究

在鲁东南棕壤区选择有代氧性的12个茶园中的60个土样进行采样调查，将测定结果与1979～1984年和1993～1994年的普查结果作比较，研究了茶园土壤养分动态变化趋势。结果表明，茶园土壤养分含量、土壤pH值随时间延长呈递增趋势，但差别较大。     

实施四大战略促进宁德茶叶发展

宁德市位于中国东南沿海,福建省东北部,俗称闽东.依山面海,气候温和湿润,山地丘陵众多,土壤肥沃,山清水秀,具有发展茶叶得天独厚的优越条件.宁德产茶历史悠久,传统名茶"坦洋工夫"、"白琳工夫"、"白毫银针"、"天山绿茶"、"绿雪芽"等闻名海内外.     

层次分析法在鲁东南山区茶树种植因子权重中的应用

五莲县地处鲁东南低山丘陵区,气候温和,雨量集中,年平均气温13.2℃,独特的地理环境孕育了五莲绿茶"滋味浓,耐冲泡"的优良品质。近年来,五莲县重视农业产业结构调整,茶树种植面积扩大到1000公顷,茶叶成为重要的特色农产品之一。一、影响茶树种植因子的选择与权重确定茶树的生长对气候、地貌、土壤等条件有一定的要求:3月下旬气温达到8℃以后,从茶树嫩芽膨大到停止生长的220天内要求≥10℃积温在4000℃以上,生长过程年平均气温至少在10℃以上,最低气温大于-10℃,最高气温小于35℃,南方茶树种植地区年平均降水量一般介于1000～1400mm;一般在茶树生长期中,平均每月降水量有100mm     

日照市打造“北方绿茶之乡”的战略与措施

山东省日照市位于鲁东南的黄海之滨,属暖温带湿润季风区大陆性气候,既有南方空气湿润的特点,又有北方四季分明的特征,被誉为“北方的南方,南方的北方”。日照市因东临黄海,受太平洋暖湿气流的影响,呈现出冬暖夏凉的气候特征,年日均气温12．7℃,全年≥10℃的积温达4231．2℃,年无霜期203天,年光照时数2432．8h,日照率55％,年均降水量768．7mm：日照市境内山地、丘陵广布,山清水秀,土壤多为棕壤土,呈微酸性,富含有机质和硒等对人体有益的微量元素。独特的气候和地理条件使日照绿茶具有汤色黄绿明亮、香气栗香浓郁、滋味甘醇的独特品质,被誉为“江北第一茶”。     

日照茶区病虫害绿色防控技术的发展与探索

<正>日照市位于鲁东南的黄海之滨、山东半岛城市群南翼,因蓝天、碧海、金沙滩和盛产绿茶而富有魅力。1966年,日照"南茶北引"获得成功,实现了我国种茶区域的重大突破,目前已发展成为山东省规模最大、特色鲜明、优势明显、效益突出的绿茶生产基地,全市现有茶园面积22万亩。一、日照茶区病虫害发生的特点和防治情况日照茶区虫害主要有假眼小绿叶蝉、绿盲蝽、茶橙瘿螨、角蜡蚧、黑刺粉虱等;病害主要有云纹叶枯病、轮斑病、茶煤病,由于夏季干燥、冬季寒冷,通常年份病害发生较轻。     

实施四大战略 促进宁德茶业发展

宁德市位于中国东南沿海，福建省东北部，俗称闽东。依山面海，气候温和湿润，山地丘陵众多，土壤肥沃，山清水秀，具有发展茶叶得天独厚的优越条件。宁德产茶历史悠久，传统名茶“坦洋工夫”、“白琳工夫”、“白毫银针”、“天山绿茶”、“绿雪芽”等闻名海内外。     

山东日照“南茶北引”历史变迁——“南茶北引”成功50周年暨日照茶业发展侧记

正日照地处鲁东南的黄海之滨,是山东"南茶北引"最早的地区之一,是"南茶北引"最为成功的地区,现已发展成为我国秦岭淮河以北规模最大、产业体系日臻完善的主茶区。据统计,截至2015年底,全市茶园面积21.1万亩,产量1.35万吨,系列产值24亿元。"日照绿茶"已获中国驰名商标、原产地保护产品和国家地理标志农产品认定,区域公用品牌价值达11.87亿元,跻身全国50强。历经半个多世纪发展,     

提高花生田经济收益的几项措施

临沭县地处鲁东南,土壤类型以棕壤为主,种植业中花生是一大优势,近几年种植面积达27万亩,占全县耕地面积的33.7％。春种花生是主要的种植方式,占花生总种植面积的90％,多数地块实行小麦—地瓜—花生两年三作,花生产量虽较高,但年均亩净     

湘西植烟土壤养分变化趋势分析

通过对比湘西自治州2010年295个与1999年453个植烟土壤样品养分含量,分析养分含量变化趋势,结果表明：湘西州植烟土壤pH值基本没有变化,有机质含量有下降的趋势;大量元素养分全氮、碱解氮、速效磷含量有上升的趋势,全磷含量有下降的趋势,全钾、速效钾变化不明显;中量、微量元素养分,除有效锰含量有下降的趋势外,其他都有升高的趋势。同时速效氮、速效钾含量的平均值随着海拔升高而升高。针对湘西州植烟土壤养分含量特点,建议控氮、稳磷、增钾。     

多环芳烃对土壤线虫和微生物生物量的影响

通过向土壤中添加不同浓度的3种多环芳烃（PAHs）蒽、2-甲基蒽和7,12-二甲基苯并[a]蒽,研究PAHs对土壤微生物生物量碳和土壤线虫的影响。结果表明,土壤微生物生物量碳随PAHs浓度增加而呈指数下降,说明PAHs可抑制土壤微生物活性。土壤线虫总数随PAHs浓度不同而变化,低浓度和高浓度条件下土壤线虫总数增加,中等浓度对土壤线虫总数无影响。土壤线虫中食植物线虫和食细菌线虫占总数的81.8%,PAHs加入后此两类线虫仍占绝对优势,占总数的77.0%-92.8%。但线虫营养类群发生变化,食植物线虫和杂食性线虫比例增高,而食细菌线虫和食真菌线虫比例趋于降低,这主要由PAHs对土壤微生物的影响所致。     

蔗区土壤肥力现状与甘蔗测土配方施肥

本文对南宁市和崇左市蔗区主要土壤养分抽样调查,针对蔗田土壤酸化加重、有机质含量低,有效磷钾含量中等偏低、速效钾后备贮量供给较低的现状,提出蔗田土壤改良、氮磷钾平衡施肥和加大中量元素的开发与应用的建议。     

Mapping soil micronutrients

Soils vary widely in their micronutrient content and in their ability to supply micronutrients in quantities sufficient for optimal crop growth. Soils deficient in their ability to supply micronutrients to crops are alarmingly widespread across the globe, and this problem is aggravated by the fact that many modern cultivars of major crops are highly sensitive to low micronutrient levels. Original geologic substrate and subsequent geochemical and pedogenic regimes determine total levels of micronutrients in soils. Total levels are rarely indicative of plant availability, however, because availability depends on soil pH, organic matter content, adsorptive surfaces, and other physical, chemical, and biological conditions in the rhizosphere. Micronutrient availability to plants can be measured in direct uptake experiments, or estimated with techniques that correlate quantities of micronutrients extracted chemically from soils to plant uptake and response to micronutrient fertilization. Rational management of micronutrient fertility and toxicity requires an understanding of how total and plant-available soil micronutrients vary across the land. A variety of approaches have been used to survey and map the geographic distribution of soil micronutrient content and availability at scales ranging from global to sites within single production fields. Soil micronutrient maps covering large areas improve our understanding of the nature and extent of micronutrient problems, and aid in determining their relationships with climate, soil properties, and soil genetic characteristics determined at similar scales, for example, Soil Taxonomy to the order, sub-order, or great group levels. Intermediate scale maps can be useful in delineating specific areas where deficiencies or toxicities are likely for agriculture, and in determining localized soil characteristics that may be associated with such problems. Highly detailed maps of soil micronutrient content and availability in individual fields are being developed for site-specific precision agriculture. Soil micronutrient maps have fostered discovery of relationships between soil micronutrient content and availability and some human and livestock health problems such as goiter, Keshan and Kaschin–Beck diseases, and cancer. Advances including the global positioning system (GPS), geographic information systems (GIS), inductively coupled plasma (ICP) spectrometry, geostatistics, and precision agriculture facilitate soil micronutrient mapping and provide quantitative support for decision and policy making to improve agricultural approaches to balanced micronutrient nutrition.     

广西主要蔗区宿根蔗根际土壤微生物群落结构分析

探讨了广西主要蔗区宿根蔗根际土壤微生物的分布情况,结果表明：宿根蔗根际土壤微生物数量总体上表现为：细菌〉真菌〉放线菌。但宜州市和北海市土壤中真菌数量〉放线菌;崇左市土壤中真菌和放线菌相当。     

施用白云石粉对黄红壤 酸度和油菜产量的影响

田间试验结果表明,酸性黄红壤上施用白云石粉显著降低了土壤交互性铝含量和提高了土壤pH值,其 降酸作用与白云石粉用量呈正相关。适当施用白云石粉能够极显著提高油菜产量。白云石粉用量在1 600kg/hm2 时,油菜达到最高产量2 518kg/hm2。此外,施用白云石粉改善了土壤的养分状况,提高了油菜植株的养分含量和 养分吸收量。     

Predicting soil moisture condition in arbitrary agricultural lands using the digital soil map and soil physical properties database

To predict soil moisture condition in arbitral agricultural lands by taking spatial distribution of soil type in a watershed into account, we investigated the possible proper methods of determining the soil hydrological parameters using available soil physical properties database of Japanese soils, “SolphyJ”, and the digital soil map. In this study, simulation of soil moisture was conducted at three neighboring locations, including monitoring sites each in Toyama and Fukui cities. The simulated results of soil moisture appeared to be improved when hydraulic parameters were obtained by fitting water retention data of SolphyJ compared to the parameters estimated by neural network with soil texture and dry bulk density data. It is probably because peculiar soil structure in each field could affect the hydraulic properties more than the soil texture. Simulation results also indicated that soil moistures are much different even if they are located in neighbors (<5 km). We concluded that combination of these two databases is useful for estimating soil hydraulic parameters and to predict soil moisture condition in arbitrary agricultural lands.