CAJ | 학술논문

对晋西黄土区核桃玉米间作模式界面上土壤水分的分布规律和玉米产量进行了研究.结果表明:(1)间作玉米的土壤含水量的季节变化极显著;(2)核桃玉米间作在垂直方向上,土壤含水量随土壤深度的增加而增加,但林带区和农作物区土壤含水量表现出较大差异;在水平方向上,随着距林带距离的增加,土壤水分增加并趋于稳定,变化曲线呈抛物线状;(3)移动窗口法分析表明,核桃玉米农林复合对土壤水分影响域主要受植被根系的分布的影响,且随着深度的不同而不同,土层深度是0～20 cm时为4.5 m,20～60 cm时为5 m;(4)由于土壤水分和其他因素(如光照和养分)的共同作用,导致了核桃玉米间作对玉米产量有负面影响,离林带越近,影响越明显.
대진서황토구핵도옥미간작모식계면상토양수분적분포규률화옥미산량진행료연구.결과표명:(1)간작옥미적토양함수량적계절변화겁현저;(2)핵도옥미간작재수직방향상,토양함수량수토양심도적증가이증가,단림대구화농작물구토양함수량표현출교대차이;재수평방향상,수착거림대거리적증가,토양수분증가병추우은정,변화곡선정포물선상;(3)이동창구법분석표명,핵도옥미농림복합대토양수분영향역주요수식피근계적분포적영향,차수착심도적불동이불동,토층심도시0～20 cm시위4.5 m,20～60 cm시위5 m;(4)유우토양수분화기타인소(여광조화양분)적공동작용,도치료핵도옥미간작대옥미산량유부면영향,리림대월근,영향월명현.
The spatial variability soil moisture contents in different layers at a typical walnut-maize intercropping boundary in the loess region in West Shanxi were studied. The results showed that: (1) the seasonal variation of soil moisture was very significant in walnut-maize intercropping system; (2) soil moisture content increased with the increased of soil depth in vertical direction, but it had signifcant difference between forest and crop regions; soil moisture content increased with the increase of the distance from the tree row and then became stable in horizontal direction, and with a parabola curve; (3) by using moving split-window techniques, it was observed that the influence domain of intercropping on soil moisture was mainly controlled by the root systems of vegetacion and varied soil depth, 4.5 m and 5 m at the soil depths of 0～20 cm and 20～60 cm respectivly; and (4) both soil moisture and other factors (such as light and nutrients) may lead to the negative influence on maize production. The negative influence was more obvious with the decrease of the distance from the tree row.