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杜仲（Ｅｕｃｏｍｍｉａｕｌｍｏｉｄｅｓ）是一种经济价值很高的树种，近年来发展比较迅速。但是由于“重栽轻管”的思想没有得到纠正，没有严格按造林技术规范施工，加之经营管理不善，病虫害严重，缺水少肥，致使林木生长衰退，枝条紊乱，形成未老先衰的、各种效益低下的“低效林”。通过几年来试验研究，认为对杜仲低效林采取相应的抚育管理措施，可达到改变杜仲林的低效的目的。这些措施主要是：１）根据林种用途及立地条件，保留适当的林分密度，如用材林、经济林，株行距以３ｍ×３ｍ～４ｍ×４ｍ为宜；小径材以１．５ｍ×２ｍ～２ｍ×２ｍ为宜；采叶为目的林分，可采用茶园的方式培养为丛状灌木林，株行距可为１．５ｍ×１．５ｍ～１．５ｍ×２ｍ。２）对于生长衰弱、低矮弯曲、严重损伤的“小老树”，可在５月上中旬从幼树根颈距地面５ｃｍ处平茬复壮。３）砍灌除草，改善林木生长环境，垦复林地．疏松土壤，增加土壤有机质，并可采取环状施肥的方法，增加土壤肥力。还可利用林粮、林农间作的方式，以耕代抚，促进幼林生长，或在林下种植绿肥作物，提高土壤肥力。４）采取除萌、抹芽、摘顶、缩剪、疏枝等措施，合理修枝整形，调节树体结构，增强树势。５）及时防治病虫害。
Eucommia ulmoides (Eucommia ulmoides) is a species of high economic value, rapid development in recent years. However, due to the fact that the idea of “replanted light tube” has not been corrected and construction has not been carried out in strict accordance with the technical specifications for afforestation, combined with poor management and management, serious pests and diseases, and lack of water and less fertilizer, the growth of forest trees is declining, A variety of low-cost “inefficient forest.” After several years of experimental research, it is considered that the eucommia ulmoides plantation should adopt the corresponding tending and management measures to achieve the purpose of changing the inefficiency of the eucommia ulmoides plantation. These measures are mainly as follows: 1) According to the purpose of forest use and site conditions, proper stand density should be reserved, such as timber forest, economic forest and plant row spacing should be 3m × 3m ~ 4m × 4m; small diameter timber should be 1.5m × 2m ~ 2m × 2m is appropriate; for the purpose of harvesting forest stands, can be used to cultivate the way for the tea plantation shrubs, spacing can be 1.5m × 1.5m ~ 1.5m × 2m. 2) For the growth-weak, low-bending, serious injury “small tree”, in mid-May from young seedling root neck 5cm from the ground stubble rehabilitation. 3) Cutting and weeding, improving forest growth environment, reclaiming forest land. Loose soil, increase soil organic matter, and can take the ring fertilization method to increase soil fertility. We can also make use of the ways of forest grain and forest farmer to promote the growth of young forest by cultivating or cultivating grass or planting green manure crops under the forest to improve soil fertility. 4) In addition to adorable, wiping buds, pick top, shrink cut, thinning and other measures, reasonable pruning plastic, adjust the tree structure, enhance the tree potential. 5) timely control pests and diseases.