CAJ | 학술논문

采用沟垄覆膜集雨种植紫花苜蓿和裸燕麦,测定不同沟垄比和不同垄覆盖材料对植物土壤贮水量和出苗数的影响。结果表明,沟中土壤贮水量随沟垄比增加而增加。普通地膜、可降解地膜和自然降水形成的土壤结皮具有减少土壤蒸发的作用,从而提高土壤贮水量。2012年5月7日紫花苜蓿出苗期测定结果显示,普通膜垄、可降解膜垄和土垄种植紫花苜蓿的土壤贮水量比平作分别提高为77,61和38mm。2012年4月27日裸燕麦出苗期测定结果显示,普通膜垄、可降解膜垄和土垄种植裸燕麦的土壤贮水量比平作分别提高102,83和61mm。普通地膜、可降解地膜和土垄处理提高了土壤含水量,从而提高裸燕麦株数;普通膜垄、可降解膜垄和土垄的裸燕麦株数比平作分别提高47,37和11株/m2。但高强度集雨不一定利于紫花苜蓿发芽,平作土壤含水量分布均匀,更有利于紫花苜蓿发芽。
채용구롱복막집우충식자화목숙화라연맥,측정불동구롱비화불동롱복개재료대식물토양저수량화출묘수적영향。결과표명,구중토양저수량수구롱비증가이증가。보통지막、가강해지막화자연강수형성적토양결피구유감소토양증발적작용,종이제고토양저수량。2012년5월7일자화목숙출묘기측정결과현시,보통막롱、가강해막롱화토롱충식자화목숙적토양저수량비평작분별제고위77,61화38mm。2012년4월27일라연맥출묘기측정결과현시,보통막롱、가강해막롱화토롱충식라연맥적토양저수량비평작분별제고102,83화61mm。보통지막、가강해지막화토롱처리제고료토양함수량,종이제고라연맥주수;보통막롱、가강해막롱화토롱적라연맥주수비평작분별제고47,37화11주/m2。단고강도집우불일정리우자화목숙발아,평작토양함수량분포균균,경유리우자화목숙발아。
It is low annual precipitation, dry climate and high evaporation in semiarid areas of the Loess Plat eau. The number of plant was low due to the semiarid climate. The experiment was conducted to investigate the effects of different coverage materials and ratios of furrow to ridge on emergence rate and soil water storage of alfalfa and naked oat, using rainfall harvest zones and furrows serve as planting zones. lng Th ridge to furrow,and ridges covered with ord and increased soil water storage in 120 cm d water storag biodegradabl technique with ridges and furrows, and ridges serve as runoff e results showed that soil water storage increased with ratio of mary epth. plastic film and with biodegradable film reduced evaporation Compared with traditional planting, on May 7,2012, the soil e of alfalfa were 77,61 and 38 mm in ridges covered with ordinary plastic film, ridges covered with e film and ridges compacted with soil, respectively. Compared with traditional planting, on April 27,2012,the soil water storage of naked oat were 102,83 and 61 mm in ridges covered with ordinary plastic film,ridges covered with biodegradable film and ridges compacted with soil, respectively. The ridge covered with ordinary plastic film and the ridge covered with biodegradable film enhances soil water content, and high soil water content was good for naked oat seed germination. Compared with traditional planting, the increases of plants were 47,37 and 11 (plant m-2) in ridges covered with ordinary plastic film, ridges covered with biode- gradable film and ridges compacted with soil. But high soil water was not good for alfalfa seed germination.