搜索结果: 151-165 共查到“知识库 作物耕作学”相关记录979条 . 查询时间(1.535 秒)
Integraeted Farming system in Minami-Awaji City
Integraeted Farming system Minami-Awaji City
2010/12/3
Integraeted Farming system in Minami-Awaji City
Comments on “Development of Agricultural Machinery and Farm Work Systems for Regional Crops”
Agricultural Machinery Farm Work Systems Regional Crops
2010/12/3
Comments on “Development of Agricultural Machinery and Farm Work Systems for Regional Crops”
Tractor Power Requirement of No-Tillage Seeder under Different Cover Crop Residue Management
Cover crops No-tillage seeder Power requirement
2010/12/3
No-tillage with cover crop has great potential to improve soil quality, however, it is still not clear what no-tillage seeding technique should be used under cover crop residue mulch in upland crop pr...
Comparative performance of various wheat (Triticum aestivum L.) cultivars to different tillage practices under tropical conditions
Zero tillage grain yield growth wheat Pakistan biological yield
2011/1/12
Various tillage practices can overcome the delay sowing of wheat in the rice-wheat cropping system of Pakistan to sustain the grain yield by increasing the nutrients and water use efficiency.
Child labor under the worst conditions: Child laborers in cotton production in Turkey
Agricultural Labor child labor child labor in agriculture
2011/1/11
As is the case throughout the world, child labor is a serious problem in Turkey. Healthy and happy new generations are among the prerequisites of a modern society. Among child laborers those in the ag...
The Influence of Triticum Asetivum Seeding Rates and Sowing Patterns on the Vegetative Characteristics in Shambat Soil under Irrigation
Wheat (Triticum aestivum L.) sowing method seeding rate vegetative growth cultural practices Sudan
2010/11/15
Seeding rate and sowing patterns play an important role in the proper stand establishment of
the growing crop, which ultimately affect the productivity at the end of the season. The selection of suit...
纳米增效尿素对水稻产量及氮肥农学利用率的影响
纳米增效尿素 水稻 产量 氮肥农学利用率
2012/3/30
在2009年水稻生长季,以高产水稻品种皖稻153为试材,研究了纳米增效尿素和普通尿素对水稻产量及氮肥农学利用率的影响。结果表明,等施氮量下,纳米增效尿素处理水稻分蘖数、叶片SPAD 值、干物质积累量均显著高于普通尿素处理。施氮量在N 090 kg/hm2范围内,纳米增效尿素处理子粒产量、氮肥农学利用率与普通肥料处理无明显差异; 随施氮量进一步增加,差异则达显著水平; 其中,纳米增效尿素处理水稻产量...
Performance of pumped irrigation systems and evaluation of energy efficiency: A case study of the Bagarasi and Turkelli systems in Turkey
Performance irrigation water pumping energy efficiency
2011/1/11
The sustainability (SAI and AIR), cost (MBR, PCR, ECR and CPA) and energy consumption (SEC and RAI) performance of Bagarasi pumping irrigation system (BPIS) and Turkelli pumping irrigation system (TPI...
Noise level analysis of a bulldozer used in constructing a forest road in Mediterranean region of Turkey
Ergonomics noise worker’ safety work machines
2011/1/12
Heavy machinery utilized in forest operations, as one of the working environments with intensive noise disturbance, result detrimental effects on the workers’ health. Particularly, high level noise ge...
Assessment of machinery energy ratio in potato production by means of Artificial Neural Network
Potato agricultural mechanization machinery energy ratio Artificial Neural Network
2011/1/11
A single hidden layer Artificial Neural Network (ANN) model was developed to estimate a machinery energy ratio (MER) indicator, used to characterize and assess mechanization status of potato farms in ...
Community participation is a necessity for project success: A case study of rural water supply project in Jeppes Reefs, South Africa
Community empowerment participation project success water supply
2011/1/11
In South Africa more than 12 million people do not have access to clean water and less than half of the rural population has a safe and accessible water supply. The study attempts to investigate the c...
为探讨杂交粳稻“浙优12”最佳施氮量,采用田间试验研究了不同施氮水平对浙北平原黄松田水稻产量和氮素利用率的影响。结果表明,水稻产量、氮肥生理效率(PEN)、氮肥回收率(REN)均以施氮量 210 kg/hm2处理最高,分别比无氮肥区提高了54.4%、34.1 kg/kg和58.6%; 与无氮肥区相比,在施N 150 kg/hm2基础上,配施适量有机肥有助于提高氮素利用率和产量,其PEN和REN分别...
针对蔬菜灌溉水肥渗漏问题,采用田间试验和室内分析相结合,研究了番茄膜下沟灌灌水量与土壤硝态氮的根层外渗漏关系,分析了灌水量与不同根层土壤硝态氮的淋溶和保蓄特征,结果表明: 灌溉不施肥条件下灌水量与土壤硝态氮淋溶量和淋溶率、灌溉施肥条件下灌水量与土壤施入硝态氮的保蓄率和渗漏率均呈直线关系; 灌溉均会引起浅根层(0—20 cm)硝态氮淋溶,灌溉施肥条件下7.5~15 mm灌水量范围硝态氮积累有一个峰值...
大豆菌核病田间快速接种鉴定方法研究
大豆[Glycine max (L.) Merr.] 菌核病 田间 接种鉴定
2010/4/1
【目的】在大田环境下建立快速有效的大豆菌核病田间接种鉴定方法,为大豆抗菌核病育种服务。【方法】采用收集不同地区和寄主来源的菌核病分离物,经PDA培养基再生培养,再接种麦粒形成麦粒接种体,利用微创结合锡箔纸捆绑麦粒接种体的方法建立大豆菌核病田间接种鉴定方法。【结果】不同大豆种质间的病情指数和病斑长度存在显著差异,不同分离物间的病情指数和病斑长度也存在显著差异,而重复间的病情指数和病斑长度差异不显著,...
Socio-economic factors influencing adoption of improved fallow practices among smallholder farmers in Western Tanzania
Agroforestry leguminous trees soil fertility sustainable agriculture Tanzania
2011/1/11
Declining soil fertility is recognized as one of the major biophysical constraints affecting agricultural production in Sub-Saharan Africa. “Improved fallows” technology, a leguminous trees-based soil...