nutrient cycle

Effects of cultivation system on nutrient cycle of purple soil

耕作制度对紫色土养分循环的影响

Discussion on the Problems in the Research of Nutrient Cycle in Forest Ecosystem

森林生态系统养分循环研究中若干问题的讨论

Study on nutrient cycle of the apricot for the almond

仁用杏营养元素循环研究

Nutrient Cycle of Eucalyptus Plantations with Different Continuous - Planting Rotations

不同连栽代次桉树人工林的养分循环

When nutrients are used over and over in the environment , we call that a nutrient cycle .

当养分在环境中反复被使用时，我们称之为养分循环。

Guy : What about , well , you said that the nitrogen cycle is also an important nutrient cycle .

学生：那么，您刚才说氮循环也是很重要的养分循环，

Fertilization Effect and Nutrient Cycle Balance Feature of Dryland in Loess Hilly Gully Region

黄土丘陵沟壑区旱地肥料效应与养分循环平衡特征

Studies on the Nutrient Cycle of Pinus massoniana Plantations I.The Biomass and Present

马尾松人工林养分循环研究Ⅰ.不同坡位马尾松林生物量与养分现存量

Study on Nutrient Cycle of Robinia pseudoacacia Water Resources Protection Forest in Miyun Reservoir Watershed , Beijing

密云水库北京集水区刺槐水源保护林主要养分元素的生物循环

Rainfall is a key factor affecting soil erosion and nutrient cycle by runoff in low hilly red soil area .

降雨是影响低丘红壤坡地土壤侵蚀和养分随径流迁移的一个关键因子。

A comparative study on effects of various cultivation system on nutrient cycle of purple soil was conducted according to long term experiments .

用定位试验结果，比较聚土免耕、早三熟、平作等耕作制对紫色土氮磷钾养分循环结构和强度的影响。

The important basic data which came from the results can be used to study on nutrient cycle in Liangshui National Natural Reserve .

研究结果可为凉水国家级自然保护区森林生态系统养分循环的研究提供重要的本底资料。

A Study of the Nutrient Cycle in Aerially Seeded Pinus massoniana of Hunan Province

湖南省马尾松飞播林的养分循环研究

Biomass accumulation and nutrient cycle in Oiltea Camellia plantations

油茶林生物量与养分生物循环的研究

Biomass and nutrient cycle in Tung plantations

油桐林生物量和养分循环的研究

The nutrient cycle changed indicated that when the vegetation changed , thereby results in changes in the ecological function of karst ecosystem .

植被群落的改变使土壤养分循环发生了变化，从而影响了生态系统的养分调控能力。

Nutrient cycle in three types of standing density of aerially seeded Pinus massoniana of were also studied in this paper .

对3种不同密度类型的马尾松飞播林分的养分循环进行了研究。

The turnover of fine root , the most dynamic component of root system , play an important role in nutrient cycle and energy flow in forest ecosystems .

作为植物根系中的动态组成部分，细根周转在森林生态系统中养分循环和能量流动中具有非常重要的作用。

The dry weight of litter is 2 . 496 t / hm2 . which plays an important role in nutrient cycle and water and soil conservation .

群落枯落物层较薄.现存量约为2.496t/hm2.对群落养分循环及水土保持具有重要意义。

The objects of both improving agroecosystem productivity and protecting environment can be achieved at the same by the rational regulation of energy flow and nutrient cycle .

通过合理调整系统内的能量流及物质环循，在提高系统生产力的同时，保护农业生态环境。

The relationship between dissolved oxygen and nutrient cycle in low-wetland fishponds of the Huanghe-Huaihe-Haihe plain was studied .

对黄淮海平原低洼盐碱地鱼塘中溶解氧与物质循环之间的关系进行了初步研究。

It was known that the EM played a key role in nutrient cycle in the ecosystem and promoted plant growth and also protected host plants against environmental stress .

EM在促进植物生长、提高养分吸收率、生态系统养分循环及保护植物抵御不良环境胁迫中起关键作用。

Some 32.7 % of nitrogen and 25.9 % of phosphate of animal husbandry subsystem may be returned to the field and finish the definite nutrient cycle .

畜牧亚系统氮素327%、磷素259%可归还农田亚系统，实行一定程度的养分循环。

A concept of the good nutrient cycle index ( MN ) is put forward in the paper , and the current MN is only 0.128 in the new oases in Xinjiang .

提出了养分良性循环指数（MN）概念，当前新绿洲MN只有0.128。

Litter decomposition is a key process of nutrient cycle and energy flow in ecosystems , while soil microorganism and soil fauna are the main executants of litter decomposition .

凋落物分解是生态系统物质循环和能量流动的重要环节，而土壤生物是凋落物分解的主要完成者。

Soil biological factors are important factors leading to the reduction of cotton output for the continuous cropped cotton , as well as important factor in promoting nutrient cycle and the growth of cotton .

土壤生物学因素不仅是导致棉花连作减产的重要因素，也是促进养分循环，促进棉花生长的重要因素。

The soil macrofauna could be considered as a transverter in the litter-soil fauna-soil system and play a significance role in nutrient cycle , especially in N and P cycle of the system .

土壤动物在营养元素循环，尤其是N、P元素循环中具有重要意义。

According to the research and practice on nutrient cycle of black locust forest stands in the area of gulled loess plateau , some key problems in the research of nutrient biogeochemical cycle have been discussed .

根据对黄土残塬沟壑区刺槐林地养分循环的研究和实践，对有关养分生物地球化学循环研究中遇到的若干问题进行了讨论。

The micro-flora and enzyme related with the nutrient cycle changed indicated that when the vegetation changed , the process of soil nutrient cycle and the ability of regulation and control over soil nutrient of ecosystem decreased .

在植被条件改变后，土壤养分循环过程发生改变，生态系统对土壤养分的调控能力下降。

Fertilization has been becoming a very important strategy that can adjust the nutrient cycle connected with yield , food quality , cost , fertility , non-point pollution in Social-Economic-Natural Complex Ecosystem ( SENCE ) .

施肥与产量、品质、成本、土壤培肥、食品污染和环境污染等问题密切相关，它是社会经济自然复合生态系统物质循环调控的重要措施。