栽培

Field experiments were conducted to study effects of nitrogen application rate and ratio of base and topdressing on nitrogen utilization, grain yield, and grain protein content in winter wheat using 15N tracer technique.

在大田栽培条件下，运用15N示踪技术研究了不同施氮量和底追肥比例对小麦氮素利用和子粒产量及蛋白质含量的影响。

In order to select the most suitable tree peony cultivars planting in the area of South Yangtse River of China,the changes of morphological,physiological and biochemical indices after submergence stress of eight cultivars were studied in this paper.

为了筛选适宜在江南地区栽培的牡丹品种，以8个盆栽牡丹品种为材料，对水涝胁迫下牡丹形态、生理生化变化进行了研究，初步探讨了8个品种的耐涝能力。

It is a primitive tree-fern of value in scientific research, and also can be used as an ornamental plant for growing in sheltered places.

黑桫椤属植物起源古老，具有科学研究价值，本种亦适合栽培於阴湿处供观赏。

We Investigated the species of diseases and insect pests, species of natural enemies, distribution and dominant species in export vegetable bases in Shandong Province. Dynamics of main diseases and insect pests were studied.2. We investigated the main control technologies for diseases and insect pests, types and application methods of pesticides.3. Effects of crop varieties, fertilities and cultivation on diseases and insect pests, production and pesticide residues were examined.4. Control effects and application technologies of frequency trembler grid lamps, greenhouse ozone machine and insect-proof net were tested.5. By research, seven biological preparations and twelve chemical pesticides with high activity, low toxicity and low residue were screened.

主要结果如下：1查清了山东省出口蔬菜基地蔬菜病虫害发生种类，天敌种类、分布、并评价上风种；探明了主要病虫发生消长规律。2查清了山东省出口蔬菜基地目前病虫害防治的主要应用技术、施药种类及主要施药方式。3明确了作物品种、肥力、栽培方式等农业措施对病虫发生、产量和农残的影响。4明确了频振式杀虫灯、温室病害臭氧防治机、防虫网等物理措施防治效果及其应用技术。5通过实验，筛选出7种生物制剂和12种安全有效低毒低残留化学农药品种。

The experiments were carried out to study the efficiency of sod-culture and AMF infecting to early pear, the results indicated as follows: Experiment 1 Study on the effects of sod-culture on the environments of early pear orchard By field experiment, the effects of seeding Trifolium repen L.

本论文从生草栽培和菌根效应对早熟梨生长的影响入手，作了以下研究：试验1 生草对早熟梨果园微环境的影响通过田间试验研究了单独播种白三叶草、黑麦草和混播白三叶草与黑麦草对早熟梨园微生态环境的影响。

The phenophase, growth speed, structure of tussock, bloom habits, yield of new russian wildrye strain were studied, The results showed that the new strain has good traits of strong cold and drought-resistance, turning-green early, fast development and long vegetative growing period, more tillers, developed rootsystem, high yield and bloom trimly. It is suitable to being planted in arid and semi-arid region.

对新麦草新品系及对照山丹新麦草的物候期、生长速度、草层结构、开花习性、产量性状等生物学特性和生产性能的研究结果表明，该品系具有抗寒、耐旱性强、返青早、生长发育快、青绿持续期长、分蘖多、须根系发达、开花整齐和产量高等优良特点，适宜于干旱半干旱地区栽培，具有很好的推广种植前景。

Most cultivars of banana are triploid, long life cycle, and sterility, which resulted in difficulty for its reproduction and breeding.

大多数香蕉栽培品种是三倍体，生长周期长，而且不孕。由于没有种子，给繁殖和育种带来一定的困难。

From the experiment of fertilizer which is one technology of cultivation, forage triticale is very sensitive to NP and Org.

研究对与小黑麦栽培调控关系最为密切的N、P、K 施肥反应做了研究，看出饲料小黑麦由于长势强生物量大，因而对NP 配合施用反映十分敏感，同样对优质有机肥反映亦很敏感。

This research will provide reference for reasonable use of tuckahoe cultivation field.

结论］该研究为茯苓栽培场的合理使用提供依据。

The purpose was to detect the causes and solutions why and how tuckahoe cultivation field cann't be used successively.

［目的］探明茯苓栽培场不能连续使用的原因。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。