CAJ | 학술논문

以提高灌溉水利用率为核心，以植物生理学和生态学以及树木生长为依据，连续8年对毛白杨速生丰产林节水灌溉的理论与技术进行了较为系统的研究。结果表明，利用科学的灌溉阈值，抓住关键的灌溉时期，确定有效的灌溉范围和经济的灌溉量，就可以较少的水分投入获取较高的林木生长量。在春夏干旱季节(05-06月)，以田间持水量的50％作为阈值实施灌水，具有极显著的近期和后期水分补偿效应，与较高灌溉水平(阈值为70％)相比，灌溉水利用率提高46.80％，灌水量减少22.81％，材积生长量增加13.30％，经济效益提高31.28％。
이제고관개수이용솔위핵심，이식물생이학화생태학이급수목생장위의거，련속8년대모백양속생봉산림절수관개적이론여기술진행료교위계통적연구。결과표명，이용과학적관개역치，조주관건적관개시기，학정유효적관개범위화경제적관개량，취가이교소적수분투입획취교고적림목생장량。재춘하간한계절(05-06월)，이전간지수량적50％작위역치실시관수，구유겁현저적근기화후기수분보상효응，여교고관개수평(역치위70％)상비，관개수이용솔제고46.80％，관수량감소22.81％，재적생장량증가13.30％，경제효익제고31.28％。
Taking the utilizing rate of irrigation water as the core and according to plant physiology and ecology and growth of trees, the theory and technology of water saving irrigation in Populus tomentosa intensive plantation was studied systematically for eight years in succession. The results showed that it could get more growth of trees with less water and achieve water saving irrigation by means of scientific soil moisture threshold and taking the key season and define the effective range and economic quantity for irrigation. During the dry season in spring and summer (May to June), it showed obvious compensate effects in contemporary and later stage irrigation with 50% of field capacity as the soil moisture threshold . Compared with the high level irrigation, the utilizing rate of irrigated water raised by 46.80% and the quantity of water for irrigation decreased by 22.81% while the volume of timber increased by 13.30% and the economic benefit increased by 31.28%.