1) red soil farmland
红壤农田
1.
The soil water leakage and permeability are useful to evaluate the status of water and soil loss in red soil farmland.
红壤农田的渗漏量及透水性能对评价红壤水土流失状况具有很重要的意义。
2) Red-soil rice field
红壤稻田
1.
Trends of early- and late-rice yields under 8 different treatments, including CK(no fertilizer), N, NP, NPK, C, N+C, NP+C, and NPK+C, and the reason for their changes with years(1990-2004) were analyzed in a long-term fixed red-soil rice field.
对长期定位的红壤稻田中CK(无肥)、N、NP、NPK及C、N+C、NP+C和NPK+C等8个处理下的早、晚稻产量随时间的变化趋势(1990—2004年)及其原因进行了分析。
3) Red paddy soil
红壤稻田
1.
Effect of fertilization constitution on sulfur fertility development and supplied S ability of red paddy soil;
施肥对红壤稻田硫素演变及供硫能力的影响
2.
Effect of fertilization constitution on sulfur balance of red paddy soil:;
施肥结构对浙西红壤稻田硫素平衡的影响
3.
To investigate the change of nutrient content in red paddy soil,the characteristics of rice growth and the relationship between soil nutrient and rice growth,the effects of long-term organic matter circling on soil nutrient and rice growth were studied in a long-term experimental field.
通过长期有机物循环的定位试验,研究了长期有机物循环利用对红壤稻田养分供应及水稻生长发育的影响,目的是了解长期有机物循环利用后土壤养分含量变化、水稻生长特性及两者的相关性。
4) Wetland in red soil area
红壤水田
5) agricultural soil
农田土壤
1.
The spatial structure feature of heavy metals in agricultural soil of mining city:A case study of Fuxin, China;
典型矿业城市农田土壤重金属含量的空间结构特征——以辽宁省阜新市为例
2.
A simulation analysis of distribution and change of agricultural soil carbon pool in Liaoning Province;
辽宁省农田土壤碳库分布及变化的模拟分析
3.
The distribution pattern of N_2O emission from agricultural soil in China;
中国农田土壤N_2O排放通量分布格局研究
6) farmland soil
农田土壤
1.
Contents and spatial distribution patterns of heavy metals in farmland soils of Fuxin City.;
阜新市农田土壤重金属含量及其分布特征
2.
Environmental effect of mercury contamination of farmland soils in the Tongguan gold mining area,Shaanxi,China;
陕西潼关金矿区农田土壤Hg污染的环境效应
3.
Gontrol measure of heavy metal Hg and Ca in polluted farmland soil;
农田土壤重金属汞、镉污染的治理措施
补充资料:红壤
红壤 red earth 发育于热带和亚热带雨林、季雨林或常绿阔叶林植被下的土壤。主要特征是缺乏碱金属和碱土金属而富含铁、铝氧化物,呈酸性红色。主要分布于非洲、亚洲、大洋洲及南北美洲的低纬度地区。大致以南北纬30°为限。在中国,北起长江沿岸,南抵南海诸岛,东自台湾省,西至云贵高原及横断山脉为主要分布区域。红壤的形成是在高温多雨、植被茂密的生物、气候条件下,土壤中富铝化和生物富集相互作用的结果。根据成土条件的变化和富铝化作用的强度,中国境内红壤可分为砖红壤、砖红壤性红壤、红壤、黄壤4个亚类。前2类多见于热带和南亚热带,土体中碱金属及碱土金属含量均低,pH4.5~5.0,适宜种植热带和亚热带作物及水稻。第3类多见于亚热带低山丘陵地带,土壤pH5.0左右,富铝化程度较前2类弱,适宜种植亚热带经济作物和水稻、玉米等。为更好地利用红壤,须对其淋溶作用强、矿质养分少、酸性大、易产生铝锰毒害、保肥性能差和质地粘重或砂粒过多等不良性状进行改良。具体措施是:增施氮、磷、钾等矿质肥料,氮肥宜用粒状或球状深施,磷肥宜与有机肥混合制成颗粒肥施用;施用石灰降低土壤酸性;合理耕作;选种适当的作物、林木,种植绿肥是改良红壤的关键措施;旱地改水田,减少水土流失并有利于有机质积累,提高土壤生产力;保护植被,防治侵蚀,凡坡度大于25°的陡坡应以种树种草为主,小于25°的坡地根据陡缓状况修建宽窄不等的等高梯地或梯田种植。
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