不同耕作方式对土壤水分、干物质积累及玉米产量的影响
针对广西玉米主产区土壤耕层变浅、犁底层坚硬的问题,以当地习惯的耕作方式旋耕为对照,设置深松35 cm＋免耕、深松35 cm＋旋耕、深松25 cm＋免耕、深松25 cm＋旋耕和免耕6种不同耕作方式,分析不同处理对土壤水分、干物质积累及玉米生长发育的影响.结果表明：深松处理均能提高土壤含水量,其中以深35 cm＋旋耕和35cm＋免耕的保墒效果最佳;深松处理均增加了叶面积、根冠比;而深松处理的产量构成因素均较对照有不同程度的改善.在研究设定的6种耕作措施中,以深松35 cm＋旋耕为最优组合....
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| Published in | 广东农业科学 Vol. 41; no. 16; pp. 4 - 8 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
广西农科院玉米研究所,广西南宁,530227%四川省农科院作物研究所,四川成都,610066
2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1004-874X |
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| Summary: | 针对广西玉米主产区土壤耕层变浅、犁底层坚硬的问题,以当地习惯的耕作方式旋耕为对照,设置深松35 cm＋免耕、深松35 cm＋旋耕、深松25 cm＋免耕、深松25 cm＋旋耕和免耕6种不同耕作方式,分析不同处理对土壤水分、干物质积累及玉米生长发育的影响.结果表明：深松处理均能提高土壤含水量,其中以深35 cm＋旋耕和35cm＋免耕的保墒效果最佳;深松处理均增加了叶面积、根冠比;而深松处理的产量构成因素均较对照有不同程度的改善.在研究设定的6种耕作措施中,以深松35 cm＋旋耕为最优组合. |
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| Bibliography: | 44-1267/S The characters of Liaoning province the main maize production region are that soil layer shoal and plow pan is hard. According to the characters, 5 tillage managements were designed to study effects of different tillage manage- ments on soil moisture and development of maize. CK is the rotary tillage, the others are 35 cm sub soiling depth and no- tillage, 35 cm sub soiling depth and rotary tillage, 25 cm sub soiling depth and no- tillage, 25 cm sub soiling depth and rotary tillage. The results showed that soil water contents of different tillage manage-ments were all higher than CK. Among of which the 35 cm sub soiling depth and no-tillage and 35 cm sub soiling depth and rotary tillage in the fall were moresignificant. All the tillage managements increased the leaf area, the root/shoot ratio, Otherwise, after the subsoiling treatment, maize yield components than CK. Among them, the combination of 35 cm sub soiling depth and rotary tillage is the most optimal. maize; cultivation methods; soil water co |
| ISSN: | 1004-874X |