1) shelter forest decline
防护林衰退
2) forest decline
森林衰退
3) forest decline
森林衰退病
1.
The current situation of forest decline research and the prospect of it s future;
森林衰退病研究现状及展望
2.
It is deemed that the important cause to hurt is the dry rot and traumas by wind, thunder, cold and disease, but the root cause is the rubber tree decline, according to the particularity of tropical arbor and the commonness of forest, the forest decline theory, rubber production.
根据橡胶树既具有林木的共性又独具热带乔木作物的特殊性,运用森林衰退病理论,结合橡胶生产实际分析认为:橡胶树遭受风、雷、寒、病等灾害造成损伤、树皮溃烂、干枯是橡胶树小蠹虫危害的重要原因;橡胶树衰退则是小蠹虫危害的根本原因。
4) land capability decline of plantation
人工林地力衰退
1.
The results of study on the land capability decline of continuous cropping of Larix and Cunninghamia lanceolata showed that the imbalance of bio_cycle and improper cultivation technology were the main causes of land capability decline of plantation.
人工林地力衰退主要表现为土壤剖面逆向发育 ,土壤理化性质变差 ,有机质和养分状况恶化 ,人工林生产力下降等。
5) fire protection
护林防火<林>
6) shelter forest
防护林
1.
Theories and technologies of ecologically regulating poplar longhorned beetle disaster in shelter forest.;
防护林杨树天牛灾害的生态调控理论与技术
2.
Study on Structure and Growth of Shelter Forest in Maowusu Sand;
毛乌素沙地防护林结构与生长的研究
3.
Research on the Benefit of Shelter Forest Protection in Yulin Desert Region
榆林沙区农田防护林防护效益研究
补充资料：防护
防备和保护：这些精密仪器在运输途中要严加～。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条