贵州喀斯特区不同处理下顶坛花椒林地需水及节水补水的研究

Study on Ecological Water Requirement,Saving and Supplying Water Amount for Zanthoxylum bungeanum var. dintanensis in Forestland under Different mulching in karst areas

通过对试验区顶坛花椒林地的不同小生境在不同处理下需水量及节水补水技术的研究,其研究表明:在喀斯特区不同小生境经覆盖后,各生长发育期土壤含水量提高,蒸发量减少。在各生长发育期需水量明显提高,亏缺水量都下降了;土面、石沟这两种小生境选用石面覆盖,石槽采用枯枝落叶覆盖为优;不同小生境补水期及补水量有较大的差异。

Water requirement, saving and supplying water amount for different microhabitats of Zartthoxylum bungeanurn var. dintanensis in forestland have been studied under different mulching in karst areas,The results shows that both soil moisture and water requirement increase and both evaporation and water shortage decrease for different microhabitats under different mulching during growth periods. Stone mulching should be used for soil surface and stone gully, but lither mulching should be adopted for stone pit. Time and amount of supplying water are different very much for different microhabitats.