| 1. | On chaozhou people ' s complex of native soil culture in thailand 泰国潮人的乡土文化情结 |
| 2. | Study of utilization rate of coated urea nutrient release based on non soil culture 桐油包膜尿素在无土基质中的利用性研究 |
| 3. | Areoponics ( ac ) and soil culture ( ck ) were compared in spring production ( 2005 ) with the shanqi recipe of tomato nutrient solution 结果表明:雾培番茄植株长势旺盛,叶片叶绿素含量和净光合速率增加,每穗果的单果重和单株产量提高。 |
| 4. | The difference of the amount of zn uptaken by different pakchoi cultiva rs under two zinc levels was studied by using methods of soil culture and soluti on culture 采用土培和液培试验研究了不同小白菜品种植株吸锌量的差异及原因。 |
| 5. | Effects of extracts from peganum multisectum ( maxim . ) bohr . on seed germination , seedling growth and physiological characteristics of cucumber under the conditions of indoor culture and soil culture in flowerpot were investigated 摘要通过室内培养和盆栽土培试验研究了多裂骆驼蓬提取物对黄瓜种子萌发和幼苗生长及生理特性的影响。 |
| 6. | The research indicated that the conductance measurement could appraise the characteristic and velocity of slow release fertilizer fast and accurately and qualitatively , while soil culture method and water cultivation could determine its supply performance quantitative 研究表明,可以用电导率法快速准确地定性评价缓释肥料的供肥特性和供肥速度,用土壤培养法和水培法定量测定其供肥性能。 |
| 7. | Our aim is to provide reference data for the mechanism of the effects of ree on crops and the safety evaluation of re used in agriculture . 1 . in soil culture experiment , re applications with appropriate dose in dry condition increased the contents of soil available n , whose no - effect value were 505mg / kg at eighth week , whereas higher levels of re had negative effects , re applications with both appropriate and higher dose in inundated condition reduced the contents of soil nh / - n and hydrolysable n . re treatment concentrations showed significant positive correlation with the contents of soil exchangeable re . and significant negative correlation with the contents of soil available p and soil ph value . there was no significant effects of re on soil exchangeable cations , but applications of re increased the contents of soil water soluble cations , especially that of ca2 * and mg2 + 两种培养条件下,稀土处理浓度与土壤交换态稀土含量成正比,与有效磷含量、土壤ph成反比,对土壤交换态盐基离子含量无显著影响,但通过置换作用增加了水溶态离子,尤其是ca ~ ( 2 + ) 、 mg ~ ( 2 + )离子的含量;第二周稀土处理增加交换态zn含量,对交换态fe有降低作用,旱培条件下增加交换态mn含量,淹水条件下对其有降低作用;第八周稀土处理均提高交换态fe 、 mn 、 zn含量,其机制主要与稀土降低土壤ph有关。 |
| 8. | A survey of literature shows that little study has been done on uptake of pollutants by plants from the polygonaceae , and that the reports about their physiological and biochemical characteristics under heavy metal stress were sporadically seen . a batch of sand culture and soil culture experiments were carried out to investigate heavy metal and radiocesium uptak e and accumulation by rumex acetosa linn , polygonum microcephalum d . don , and rumex hastatus d . don widely distributed on copper mining areas , and their physiological and biochemical characteristics under cu zn stress , as well their potentials in application to phytoremediation 本论文以广泛生长于铜矿区的蓼科植物酸模、小头蓼和戟叶酸模为试验材料,运用砂培、土培等方法,研究它们对重金属( cu 、 zn )以及放射性核素( ~ ( 134 ) cs )的吸收和积累特性以及cu 、 zn胁迫条件下它们的生理生化特征,初步探讨它们在无机污染物污染土壤植物修复中的应用潜力。 |
| 9. | While considerable work has been done for the effects on crops jess work was conducted for the effects on soil quality , especially soil environment in rhizosphere . the objectives of this study were , therefor to discribe the characteristics and effects of applying re on soil mineral nutrition with a soil culture experiment as well as the effects of re on translocation and uptake of mineral ions in rhizosphere with a simulating rhizosphere experiment 本研究以油菜和水稻为供试材料,通过土壤培养试验和根际模拟试验并结合室内分析研究稀土对土壤矿质营养的作用及对根际矿质离子迁移、吸收的影响,以期从根? ?土系统出发,为稀土农用增产机理和环境风险性评价提供理论参考依据。 |