晋江市桂林农田防护林营造和效益观测

The Planting and Benefit observation of Field Protection Forests in Guilin of Jinjiang City

桂林村农田防护林建设以林网为主体,进行林、田、水、路和渠的综合治理,林带采用“窄带少行”,减少占地面积,防护效益显著。效益观测结果表明:在防护林庇护下,改善了气候环境,提高了作物产量。主林带背风面风速可降低29%—43%,全年平均气温提高0.5℃,冬季提高1℃,地温年均提高0.5—1.0℃,早稻年均增产29.2%,晚稻年均增产17.7%。

In the construction of field protection forests in Guilin Village, forestnets are taken as the main part and the comprehensive harnessing of forests,fields, water, roads and canals is conducted. The measure of 'narrow strips andfew rows' is adopted on the forest strips to reduce the area of lands which thestrips take up and the protective benefits are significant, Benefit observation re-sults indicate that the climatic environment is improved and the crop yield in-creases under the shelter of protection forests. The wind speed on the lee side onmain forest strips can be reduced by 29%-43%. The annual average air temper-ature increases by 0.5℃ (it increases by 1℃ in winter) and the average groundtemperature increases by 0.5--1.0℃. Thus, the annual average early rice yieldincreases by 29.2% and the annual average late rice yield increases by 17.7%.