]*>","")" /> Effect of Straw Mulching on Water-saving of Pear Grown in Desert Oasis Field

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Effect of Straw Mulching on Water-saving of Pear Grown in Desert Oasis Field

  • Received:2003-05-25 Revised:2003-05-25 Online:2003-05-25 Published:2003-05-25

荒漠绿洲新梨7号梨园覆草节水效应的研究

徐胜利;陈小青   

  1. 塔里木农垦大学植物科技学院,新疆阿拉尔,843300

摘要: 南疆荒漠绿洲光热资源充足,但水资源短缺,严重制约了农业的发展,连续5年对新梨7号梨园进行了覆草节水试验.结果表明:覆草能显著提高新梨7号产量和品质,5年年均增产15.2;~65.3;,节水28.8;~36.1;,土壤有机质含量增加25.6;~70.5;,速效氮、速效钾和速效磷的含量分别增加39.1~76.4、4.5~18.0和29.8~76.9 mg/kg,0~30 cm土层10.0 mm直径总根数增加55;~122.1;.经济效益分析表明:以覆草15 cm比较适宜,5年年均增产7 514.3 kg/hm2,纯收入达到12 117.15元/hm2,节水效益达到508.55元/hm2,产投比为4.39.