摘要
以常规覆膜 (ck1)和起垄覆膜 (ck2 )为对照 ,探讨了玉米采取沟垄种植 ,并用油毡替代地膜覆盖垄面的集水效应对耕层地温、植株生长发育及产量和水分生产效率的影响。结果表明 ,用油毡替代地膜后 ,雨后种植沟内聚集的降水是 ck1的 2 .0 7倍 ,是 ck2 的 1 .2 4倍 ;耕层 0 cm～ 2 0 cm地温分别较 ck1和 ck2 低 1 .6℃和 0 .8℃ ,对控制玉米营养生长 ,促进生殖生长和缓解常规覆膜玉米的早衰现象十分有效 ,总生育期较 ck1和 ck2 分别延长了 1 4d和 6d,较二者的增产幅度达 2 7.4%和 1 9.7% ,水分生产效率也提高了 2 .2 5kg/(hm2 · mm)和 1 .35kg/(hm2 ·mm)。
The rain water collection effect of maize with asphalt felt mulching and ridge planting and the effects on the soil temperature, the plant development and the yield, and the water productivity were studied. In the field test, the conventional plastic sheet mulching was taken as the control 1(ck 1) and the plastic sheet mulching on ridges was taken as the control 2(ck 2). The results showed that the precipitation collected in furrows of the asphalt felt mulching was 2.07 times as much as that of ck 1, and 1.24 times as much as that of ck 2 . And the temperature in top soil (0 cm^20 cm)of the asphalt felt mulching was 1.6℃ lower than that of ck 1 and 0.8℃ lower than that of ck 2. These effects are favorable for reducing maize vegetation growth, promoting reproduction growth, and lightening premature decay of maize with conventional plastic sheet mulching. The maize growing period of the asphalt felt mulching was 14 days longer than ck 1 and 6 days longer than ck 2 , the maize yield increase was 27.4 percent more than ck 1 and 19.7 percent than ck 2, and the water productivity was increased in 0.15 kg/mm high than ck 1 and in 0.09 kg/mm than ck 2.
出处
《干旱地区农业研究》
CSCD
北大核心
2000年第4期25-30,共6页
Agricultural Research in the Arid Areas
基金
山西省科技攻关项目!"节水农业工程化技术研究"的部分内容
关键词
油毡覆盖
水温效应
生长发育
玉米
产量
asphalt felt mulching
soil water and temperature effects
plant developmh
