Karst rocky desertification (KRD) is a global environmental degradation problem caused by human activities and vegetation deterioration. Vegetation restoration in KRD is very difficult due to severe water loss, soil erosion and extensive bare bedrock. For achieving vegetation restoration on bare bedrock areas of KRD, the nutrient medium technique was developed, which is based on the special hydro-geological conditions that is seasonal rainfall is abundant in Karst region of Southwest China and limestone fissures are extremely developed and rich in fissure water. The objective of this research is to investigate the feasibility of using nutrient medium technique to achieve vegetation restoration in KRD region. Through the indoor and field experiments, some properties of the nutrient medium mixture were tested, including water retention, water absorption and nutrient retention. The results showed that the moisture content on the 75th day and water absorption rate of No.2 mixture was 19.9% and 1.67 mm/d, respectively, which could be used as optimum mix ratio for producing nutrient medium. The field results showed that the nutrient medium technique could effectively guarantee the survival of sapling at early age and sustainable growth at later age in the field, and the nutrient medium had less nutrient loss. This novel approach can retain and absorb moisture, and saplings do not need artificially supply water and fertiliser in the dry season, and the use of nutrient medium technique to achieve vegetation restoration in KRD region seems to be a feasible option.

喀斯特石漠化（KRD）是人类活动和植被退化导致的全球环境退化问题。由于严重失水，水土流失和大量裸露的基岩，KRD的植被恢复非常困难。为了在KRD的裸露基岩区域实现植被恢复，开发了一种营养介质技术，该技术基于特殊的水文地质条件，即西南喀斯特地区季节性降雨充沛，石灰岩裂缝极为发达且裂缝丰富。水。这项研究的目的是研究使用营养介质技术实现KRD地区植被恢复的可行性。通过室内和野外实验，测试了营养培养基混合物的一些特性，包括保水力，吸水和养分保留。结果表明，第2天混合物第75天的水分含量和吸水率分别为19.9％和1.67 mm / d，可作为生产营养培养基的最佳混合比。田间试验结果表明，该营养液技术可以有效地保证树苗在幼年的生存和后期幼木的可持续生长，且营养液的养分流失较少。这种新颖的方法可以保留和吸收水分，在干旱季节，树苗不需要人工供应水和肥料，使用营养培养基技术在KRD地区恢复植被似乎是可行的选择。2的混合比分别为19.9％和1.67 mm / d，可作为生产营养培养基的最佳混合比。田间试验结果表明，该营养液技术可以有效地保证树苗在幼年的存活和晚年的可持续生长，且营养液的养分流失较少。这种新颖的方法可以保留和吸收水分，在干旱季节，树苗不需要人工供应水和肥料，使用营养培养基技术在KRD地区恢复植被似乎是可行的选择。2的混合比分别为19.9％和1.67 mm / d，可作为生产营养培养基的最佳混合比。田间试验结果表明，该营养液技术可以有效地保证树苗在幼年的生存和后期幼木的可持续生长，且营养液的养分流失较少。这种新颖的方法可以保留和吸收水分，在干旱季节，树苗不需要人工供应水和肥料，使用营养培养基技术在KRD地区恢复植被似乎是可行的选择。田间试验结果表明，该营养液技术可以有效地保证树苗在幼年的存活和晚年的可持续生长，且营养液的养分流失较少。这种新颖的方法可以保留和吸收水分，在干旱季节，树苗不需要人工供应水和肥料，使用营养培养基技术在KRD地区恢复植被似乎是可行的选择。田间试验结果表明，该营养液技术可以有效地保证树苗在幼年的存活和晚年的可持续生长，且营养液的养分流失较少。这种新颖的方法可以保留和吸收水分，在干旱季节，树苗不需要人工供应水和肥料，使用营养培养基技术在KRD地区实现植被恢复似乎是可行的选择。