经过田间试验，证明它们是很有效的。
田间试验结果与室内毒力测定相吻合。
在马里和尼日尔也进行了类似的田间试验。
Similar studies took place in field trials in Mali and Niger.
通过田间试验研究了生物硅肥的施用效果。
Field experiment was conducted to investigate the applying impact of biology silicon fertilizer.
这将对田间试验和指导农业生产有重要参考价值。
This will be of important referential value for guiding field experiments and production.
通过木薯田间试验，研究了木薯营养规律及肥料利用率。
The law of cassava nutrition and fertilizer utilization rate by the cassava field experiments were studied.
通过实验室和田间试验才能测定出土壤钾素水平是否适宜。
Laboratory or field tests would be needed to determine the adequacy of K.
田间试验表明，20%噻森铜悬浮剂对水稻白叶枯病具有良好的防效。
Field experiments showed that 20% Saisentong SC had good control effect on rice bacterial blight.
通过田间试验研究了不同形态氮肥对大白菜产量及硝酸盐累积的影响。
Field experiment was conducted for studying the effect of nitrogen forms on the yield of Chinese cabbage and the accumulation of nitrate.
通过田间试验对湿地稻-鸭复合生态系统的稻田土壤质量进行了研究。
The quality of paddy soils in a wetland rice-duck complex ecosystem was studied by plot experiments.
通过盆栽试验、田间试验研究了紫色土壤施氮对棉花产量品质的效应。
The effects of nitrogen on cotton yield and fiber quality in purple soil have been investigated by pot and field test.
通过田间试验研究了包膜肥料ZP氮素释放特点和在夏玉米上施用效果。
The nitrogen release character of ZP coated fertilizer and its effect on summer maize were studied by field plot test.
采用田间试验方法，研究了钾对大豆产量、产量构成因素及品质的影响。
The effect of potassium on the yield and quality was studied in the field.
通过田间试验研究了高产生姜生长特性及对氮、磷、钾的吸收分配规律。
The absorption and distribution of nitrogen, phosphorus, potassium and growth characteristics of high-yield ginger were studied in this experiment.
采用田间试验和盆栽试验研究可降解地膜对作物生长和土壤环境的影响。
Degradable films' effects on com growth and soil environment were studied by field experiment and pot experiment.
采用田间试验方法，研究了莫比朗在柑桔和土壤中的消解动态和最终残留。
A field experiment was conducted to reveal the residue dynamics of acetamiprid in orange and soil.
1997年做了田间试验用来评价影响马铃薯晚疫病流行的关键天气条件。
Field trials were conducted in 1997 to evaluate crucial weather conditions for potato late blight epidemic.
通过田间试验，研究了不同施肥方式对菜园土壤环境质量及作物产量的影响。
Effects of different fertilizing modes on soil environment quality and crop yield of kailyard were studied through field experiment.
采用田间试验研究磷肥用量对高油玉米和普通玉米吸磷特性及品质产量的影响。
A field trial was carried out to investigate phosphorous (p) absorption, quality and yield between high oil maize and common maize.
本文对温室滴灌条件下水氮运移的动态变化规律进行了田间试验和理论分析研究。
Experiments were made under drip-irrigation in the greenhouse. Dynamic regulation of transportation of water and were researched.
通过田间试验、田间示范和室内分析，筛选出4号肥为向日葵专用肥的最佳配方。
Through field experiment, field demonstration and chemical analysis, we sifted out the fertilizer No. 4 to be the best compound fertilizer specially used for sunflower.
以田间试验为基础对棉花膜下滴灌的灌溉制度及其各因素的特点进行了分析研究。
Based upon field experiments, the under mulch drip irrigation regime for cotton as well as the factors referring to this regime were researched.
通过田间试验研究了氮肥品种组合及不同肥料配施对芹菜生长和硝酸盐含量的影响。
The influence of nitrogen fertilizers breed and different fertilizer compounds on growth and nitrate content of celery were studied by field experiment.
运用野外观察、田间试验和统计分析的方法研究泡桐自然接干性状的遗传变异规律。
The genetic variation of paulownias natural stem-join characters was studied by means of field observation, field test and statistical analysis.
采用田间试验研究了成熟期灌水对烤烟农艺性状、化学成分和致香物质含量的影响。
A field experiment was conducted to study the effects of irrigation during maturing stage on agronomic characteristics, chemical components and contents of flavor matter of flue-cured tobacco.
采用田间试验研究氮肥用量对高淀粉玉米和普通玉米吸氮特性及子粒品质产量的影响。
Field experiment was carried out to investigated nitrogen absorption, quality and yield between high-starch and common com as affected by nitrogen application.
在不同类型土壤上布置21个田间试验，研究硫肥对水稻、玉米、小麦、油菜的效果。
Over 21 field trials were conducted in different soils to show the sulphur responses to rice, corn, wheat, and rapeseed.
采用田间试验研究钾肥用量对高油玉米和普通玉米吸钾特性及子粒品质和产量的影响。
Field experiment was carried out to investigate potassium absorption, grain yield and quality between high-oil and common corn affected by potassium application.
田间试验研究了西北干旱半干旱地区地膜覆盖对土壤中n 2o排放通量变化的影响。
Field experiments was used to study the change of soil N2O discharge flux in the northwestern arid and semi-arid areas.
田间试验研究了西北干旱半干旱地区地膜覆盖对土壤中n 2o排放通量变化的影响。
Field experiments was used to study the change of soil N2O discharge flux in the northwestern arid and semi-arid areas.
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