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mn deficient soil
相关语句
  缺锰土壤
     Application of Mn fertilizer ( MnSO4·H2O ) 1.0 kg per mu ( in Mn deficient soil ) increased the yield of kenaf by 28.8%.
     对缺锰土壤施用锰肥(MnSO_4·H_2O)1.0kg/666m~2,可使红麻增产28.8%。
短句来源
     The results showed that the application of Mn fertilizer could alleviate Mn deficient symptoms of wheat and increase grain yield and Mn uptake of wheat in Mn deficient soil with rice-wheat rotation.
     结果表明 ,在水旱轮作缺锰土壤上 ,施用锰肥可以显著改善小麦缺锰症状提高小麦籽粒产量和吸锰量 ,其效果以全生育期施锰处理优于单个生育期施锰 (分蘖期、拔节期和孕穗期 ) ;
短句来源
     The content of available potassium in Mn deficient soil is also quite low,the application of K and Mn combined fertilizer will have significant effect in incrasing the yield of wheat.
     缺锰土壤有效钾也较低,钾锰肥配施对小麦产量表现为正效应。
短句来源
     The results demonstrated that oilseed rape was higher tolerance to Mn deficiency than that of wheat in the same Mn deficient soil.
     结果表明 ,在同样的缺锰土壤上 ,油菜的耐缺锰能力明显高于小麦。
短句来源
  相似匹配句对
     Mn?
     Mn的分布 ,晶界高于晶内 ,但差别不大 ;
短句来源
     The results indicated that soil N, P, K, Mn, and Zn were widely deficient.
     结果表明 ,土壤N、P、K、Mn和Zn普遍缺乏 ;
短句来源
     ? -Mn4N and ? ?
     在温度较低的1 163 K高温加热4小时,金属锰全部生成氮化物Mn4N。
短句来源
     The distribution of the soils deficient in Mn is quite consistent with that of calcareous soils.
     土壤缺锰面积与钙质土壤的分布是一致的。
短句来源
     INVESTIGATION ON THE DISTRIBUTION OF SOILS DEFICIENT IN Mn AND APPLICATION OF Mn FERTILIZER IN SHAANXI
     陕西省锰肥应用分布的研究
短句来源
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Field experiment showed that Mn contents in various organs of kenaf (Hibisus canna-binus ) varied in the following sequences, lower leaf>middle leaf>upper leaf>root>skin>stalk. The absorbed Mn was mainly present in leaves before the fiber accumulation stage. After this stage, the absorbed Mn was used for the development of stem. Ultrasection revealed that Mndeficient chloroplast tended to be expended in volume and round in shape, with the increase in its strama material. The grana were disorganized...

Field experiment showed that Mn contents in various organs of kenaf (Hibisus canna-binus ) varied in the following sequences, lower leaf>middle leaf>upper leaf>root>skin>stalk. The absorbed Mn was mainly present in leaves before the fiber accumulation stage. After this stage, the absorbed Mn was used for the development of stem. Ultrasection revealed that Mndeficient chloroplast tended to be expended in volume and round in shape, with the increase in its strama material. The grana were disorganized and its thylakoid membrance was poorly developed or even absent. Application of Mn increased the chla, chlb contents, the chl a/b ratio, and the CO2 assimilation rate. It stimulated the activity of nitrate-reducing enzyme, the synthesis of protein and nucleic acid, and the uptake and utilization of nitrogen, and affected the differentiation and development of stem fiber cells. Application of Mn fertilizer ( MnSO4·H2O ) 1.0 kg per mu ( in Mn deficient soil ) increased the yield of kenaf by 28.8%.

研究结果表明,红麻(Hibisus cannabinus)各器官的含锰量是下位叶>中位叶>上位叶>麻根>麻皮>麻秆。麻株吸收的锰在形成纤维盛期前主要集中于叶部,尔后主要用于茎的发育。由超显微切片观察到,缺锰叶的叶绿体膨胀变圆,体积增大、衬质增多,各基粒排列混乱,膜系统发育不良,甚至瓦解。砂培试验中施用锰肥可增加叶片叶绿素a和b的含量及叶绿素a/b比值,可提高CO_2同化率和提高叶片硝酸还原酶的活性,促进蛋白质和核酸的生物合成及对氮的吸收和利用,还影响茎纤维细胞的分化和发育。对缺锰土壤施用锰肥(MnSO_4·H_2O)1.0kg/666m~2,可使红麻增产28.8%。

Loessal soils are one of main soil types in the northern part of China. They are widely distributed over Shanxi, Shaanxi, Nei Monggol, Gansu, Ningxia, Qinghai and Henan provinces, with a calcareous reaction and pH of 7.5--8.5 and low content of organic matter. The yeild of crops in the soil regions is low because of drought and erosion.In comparison with the average contents of soils in the whole China, the contents of the total Zn and Mn of the soils in the loessal region...

Loessal soils are one of main soil types in the northern part of China. They are widely distributed over Shanxi, Shaanxi, Nei Monggol, Gansu, Ningxia, Qinghai and Henan provinces, with a calcareous reaction and pH of 7.5--8.5 and low content of organic matter. The yeild of crops in the soil regions is low because of drought and erosion.In comparison with the average contents of soils in the whole China, the contents of the total Zn and Mn of the soils in the loessal region are lower, Mo is very low, B is medium and Cu is slightly higher. The contents and distribution of trace elements in the soils have some regularities, which are affected by parent material, climate, topography and soil properties. The contents of Zn, Mn, Cu and Fe in soils increase with the increasing of soil clay particles from the nouthwest to the southeast. The content of B in the soils derived from river alluvium is higher than that in the soils derved from loess. And the content of Mo in the soils derived from loessal materials is the highest.The contents of available Zn, B and Mo in soils of the region are especially low. The samples which the values of available Mn, Zn, B and Mo are below. The critical levels account for about 50%, 56%, 62.7% and 74% respectively. It show that there exist large areas of Zn, B, Mo and Mn-deficient soils in the loessal region. The availability of trace elements in soils is affected by organic matter, pH and CaCO_3 The content of organic matter is positively correlated with the values of available Zn, Mn, B and Fe. The value of pH is negatively correlated with the contents of available Zn, Mn and Fe, but it is positively correlated with the content of available Mo. The amount of CaCO_3, is negatively correlated with the contents of Mn, Cu and Fe. The salinity of soils is the important factor affecting the valaes of available Mo and B.There enist processes of leaching, migration and accumlation of trace elements in the soil profile. Humus and argillic horizons are richer in Zn, Mn, Cu and Fe. Calcic horizon is rather low in the concentrations of these elements put is richer in total B.Several hundreds field experiments of trace element fertilizers in the soil region showed that an increase in crop yield of 8 15% could be obtained by adding Zn, B, Mn, and Mo fertilizers to maize, wheat, rape, cotton, millet, tobacco and beet. The area applied with these fertilizers has reached more than I0 million mu each year and excellent economical results have been obtained since 1984.

黄土区土壤微量元素含量分布受母质、地形、水热条件、土壤类型等成土过程与成土条件的深刻影响,呈现出一定的规律性。与全国土壤平均含量比较,本区土壤锌、锰较低,钼很低,硼接近,铜略高。土壤有效态锌、硼、钼、锰属低水平,存在着大面积缺乏锌、硼、钼的土壤,近一半土壤面积缺锰。近年来,锌、硼、锰肥已在生产中大面积应用,获得了显著的经济效益。

The soil Mn is reduced into Mn~(2+) in a great amount and then lenched from top-soil during rice planting in ricewheat rotation. So,the total Mn and available Mn in the alluvial paddy soil were lower than that in the original soil(alluvial soil). Under the conditions of calcareous soil, coarse texture as well as rice-wheat rotation will cause Mn-deficienty in soil. The wheat,barley, cabbage, broad bean,tobacco and lettuce are sensithive...

The soil Mn is reduced into Mn~(2+) in a great amount and then lenched from top-soil during rice planting in ricewheat rotation. So,the total Mn and available Mn in the alluvial paddy soil were lower than that in the original soil(alluvial soil). Under the conditions of calcareous soil, coarse texture as well as rice-wheat rotation will cause Mn-deficienty in soil. The wheat,barley, cabbage, broad bean,tobacco and lettuce are sensithive to Mn deficiency and the application of Mn fertilizer can increase crop yield significantly. The content of available potassium in Mn deficient soil is also quite low,the application of K and Mn combined fertilizer will have significant effect in incrasing the yield of wheat.

在水旱轮作条件下,土壤锰在植稻期间被大量还原为Mn~(21),从耕层淋失,因而冲积性水稻土全锰和有效锰低于其起源土壤(冲积土)。水旱轮作与土壤缺锰相关,但缺锰土壤必须同时具备石来性、轻质和水旱轮作的三个特征。小麦、大麦、厚皮菜、蚕豆、烟草、莴苣等对锰敏感,施锰有良好效果。缺锰土壤有效钾也较低,钾锰肥配施对小麦产量表现为正效应。

 
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