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首页> 外文期刊>Acta Horticulturae >Weed control, carbon storage and yield in asparagus field with living mulch.
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Weed control, carbon storage and yield in asparagus field with living mulch.

机译：地膜覆盖芦笋田除草，碳储量和产量。

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摘要

As asparagus plants are grown for a long period after transplanting, it is not possible to plow the field for soil improvement. Recently, because of global warming, establishment of new cropping system with carbon sequestration in soil has been expected. Cover crops provide a large amount of organic matter into the soil in many cropping. The effects of living mulch of cover crops on weed control and carbon storage were evaluated in the asparagus field planted for more than 16 years at the Experimental Farm of Hokkaido University, Sapporo, Japan. Wheat 'Hokushin' and 'Mulchi-mugi', barley 'Temairazu' and rye 'Kita-midori' were used as living mulch and were sown from early April to middle in May. Cropping with living mulch was repeated from 2006 to 2008. Wheat and barley continued vegetative growth because of no meeting of low temperature when they were sown in late April and May. However they were planted in early April, heading was observed in some plants. Weeds in interrow space were controlled by the emerged leaves of living mulch. Weed control ability of barley was high because of broad leaves emerged. Weed dry weight in summer reduced to 5% in barley living mulch compared with bare field when barley was planted at seeding density of 10 kg/10 a, in 2008. It reduced to 25% in wheat 'Mulch-mugi' which has tolerance to hot temperature. Heading was observed in rye even if rye was sown in May. Carbon content in the top soil with barley and rye increased 0.26-0.28% in average compared with bare field (no living mulch), however, there was no significant difference in soil carbon content among observed fields with or without cover crops. Spear yield was measured in 'Gijnlim' field, 8 years old, treated with living mulch in 2008 and significant difference was not recognized between rows with and without wheat living mulch in spring 2009.
机译：由于芦笋植物在移植后可以长期生长，因此无法耕作土壤以改良土壤。近来，由于全球变暖，已经期望建立新的种植系统，其在土壤中固存有碳。覆盖作物在许多作物中都会向土壤中提供大量有机物质。在日本札幌北海道大学实验农场种植了16年以上的芦笋田，评估了直播作物覆盖作物对杂草控制和碳储存的影响。小麦'Hokushin'和'Mulchi-mugi'，大麦'Temairazu'和黑麦'Kita-midori'被用作活覆盖物，并于4月初至5月中旬播种。从2006年到2008年，用活覆盖物反复播种。由于4月下旬和5月下旬播种时没有遇到低温，小麦和大麦继续营养生长。但是它们是在4月初播种的，在某些植物中观察到了抽穗期。行间空间中的杂草由活覆盖物的叶子控制。由于出现了宽阔的叶子，因此大麦的杂草控制能力很高。与2008年以10 kg / 10 a的播种密度种植大麦的裸露田地相比，大麦生活地的夏季杂草干重减少至5％。高温。即使在五月播种了黑麦，黑麦也观察到抽穗。与裸地（无地覆盖）相比，大麦和黑麦表层土壤的碳含量平均增加0.26-0.28％，但是，在有盖作物和无盖作物的观察田间，土壤碳含量没有显着差异。在2008年用活覆盖物处理的8岁'Gijnlim'田中测量了矛头产量，2009年春季有无有小麦覆盖物的行之间没有发现明显差异。

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