|
|
|
|
|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
|
|

| | Continuous cropping experiment with 23 soybean varieties was conducted from 1991 to 1994 in field. The resistances of these varieties to diseases and pests were identified under natural condition to find out varieties tolerant to continuous cropping and with high-yield. The results showed that soybean variety Anti-nematode 1 had a high anti-nematode ability and no varieties resistant to ophiomyia root-miner and root rot were found among 23 soybean varieties. There were some evident difference among varietie... | | 1991~1994年对23个品种(系)经正茬、连作一年、连作二年及连作三年的四个茬口连续种植,利用田间自然发病条件对其耐、抗病虫性和产量进行鉴定比较,鉴定和筛选耐连作、丰产性好的品种(系)。试验结果表明,抗线1号高抗大豆孢囊线虫病,对大豆根腐病和根潜蝇未发现有高抗品种(系),但品种(系)之间有差异,垦农5号高抗灰斑病。产量结果看出品种(系)间差异显著,垦农5号和黑农35产量比较稳定。 | | 文摘来源 | | In order to develop the wheat-corn-rice triple cropping system in Yangtze River delta region,the ecological principles for high and stable yield of this cropping system were systematically analyzed, based on field experiments and investigations. It was found that the local weather andsoil conditions were suitable to the growth of spring corn, the interspecific relationship inwheat-corn intercropping was mainly mutually beneficial, the agricultural resource in triplecropping system could be more effectively ... | | 为在长江三角洲地区发展麦/玉米-稻新三熟种植制度,通过大量的田间试验和生产调查,对该熟制高产稳产的生态学原理进行了系统分析结果表明.春玉米在该地生态适应性较好,麦玉米套作中的作物种间关系以互补为主,三熟制资源利用率提高20%以上,能改善土壤物理性状和农田生态环境,并有内部有机物质投入保障,以及三熟制耐连作是其高产稳产的根本所在. | | 文摘来源 | |   |
|
相关查询: | |
对查询结果不满意
|
|
|
|