不同品种硝酸盐累积的差异取决于还原硝态氮能力的差异。
The variance of nitrate accumulation of different cultivars laid on the variance of the ability in the reduction of nitrate.
综述近20年来蔬菜硝酸盐累积机理及其控制措施的研究情况。
This article summarizes the progress in the study on the mechanism of nitrate accumulation and adjustment methods for vegetable over the last 20 years.
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 on studying the affection on the yield of cabbage and the accumulation of nitrate by using different kinds of nitrogen fertilizer.
本文在田间试验条件下探讨了氮肥品种、用量及不同基肥种类对包心菜硝酸盐累积及品质的影响。
In this study, the influences of different nitrogen fertilizer variety, nitrogen level and basal manure on nitrate accumulation and quality of cabbage were investigated in field experiments.
向纯厌氧颗粒污泥系统中投加少量的好氧活性污泥后，反硝化速度加快，亚硝酸盐累积强度减弱。
After inoculating little amount of aerobic active sludge to the anaerobic system, the rate of denitrification increased and the strength of nitrate accumulation decreased.
在叶用莴苣采收前一周，将营养液换成清水，对叶用莴苣产量影响不大，叶用莴苣完全可以利用前期吸收的营养维持生长，硝酸盐累积大量减少，可有效的控制硝酸盐含量，改善品质。
Nutrient solution had been replaced water before lettuce was reaped for a week, which can reduce effectively accumulation of nitrate in lettuce, moreover, the effect of the yields isn't apparent.
减少氮磷化肥用量可以大幅度降低氮磷在土壤中的累积和硝酸盐的含量，减少氮磷的流失风险。
Reducing N and P rates also decreased N and P accumulation and nitrate content in the soil and decreased the risk of N and P running off.
施用氮素化肥对蔬菜中硝酸盐的累积影响很大。
Nitrogen fertilizer application has a great effect on nitrate accumulation in vegetables.
通过田间试验研究了不同肥料组合处理对生菜硝酸盐和重金属累积的影响。
In this study, the influences of different fertilizer combinations on both nitrate and heavy metal concentrations of Romaine lettuce were investigated by means of field experiment.
因此，有关蔬菜硝酸盐检测方法及累积因素的研究就成了人们研究的重点。
So it is important to research the detections of the nitrate and the factor of nitrate accumulation in vegetables.
研究了滇池流域集约化地区设施条件下氮磷化肥对土壤硝酸盐的累积规律。
The rules of nitrate accumulation in Dian lake drainage area in intensive cultivation are studied.
研究了滇池流域集约化地区设施条件下氮磷化肥对土壤硝酸盐的累积规律。
The rules of nitrate accumulation in Dian lake drainage area in intensive cultivation are studied.
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