| 摘要: |
| 在田间试验条件下，研究了在新砂田压砂瓜生育期内，单作（T1）、间作(T2)、覆膜单作(T3) 不同种植模式对土壤养分和土壤酶活性的影响。结果表明：(1) 三种种植模式下土壤养分含量以T3处理最高，其次是T2和T1；土壤有机质变化规律为“高-低-高-低”双峰模式，其余养分变化相似，呈“高-低-高”单峰模式。(2) 三种种植模式下土壤酶活性的变化均呈现出一定的规律性；不同种植模式下土壤酶活性存在显著差异，其中T3处理土壤酶活性最高，T2处理次之，T1处理最低。(3) 在各生育时期，土壤酶活性与各土壤养分存在显著或极显著相关关系。(4) 三种种植模式下，西瓜产量高低为T3＞T2＞T1。 |
| 关键词: 种植模式 新砂田 土壤酶活性 |
| DOI： |
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| 基金项目:2012年—2014年国家科技部农业成果转化资金项目“压砂地轮作模式、配套技术与专用设备成果转化与示范”(2012G3001016) |
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| Effects of different cropping patterns on contents of soil nutrients and soil enzyme activity of the new gravel-sand mulching field watermelon |
| ZHANG Juan, WU Hong-liang, KANG Jian-hong, XU Qiang, MA Si-shuang |
| () |
| Abstract: |
| Under the field conditions, we studied the contents of soil nutrients and soil enzyme activities at different growth stage of the new gravel-sand mulched field watermelon, with three treatments of monoculture (T1), intercropping (T2), and monoculture with plastic film mulching (T3). The results showed that the contents of soil nutrients in this three cropping patterns of T3 were highest, followed by T2 and T1 for the whole growth period of watermelon. Soil organic matter showed a bimodal pattern of high-low-high-low, and the same for other soil nutrients. Soil enzyme activities were highest for T3, medium for T2, and lowest for T1. Significantly positive correlation between soil
enzyme activities and soil nutrients was detected. Watermelon yield followed the order of T3〉T2〉T1. Results obtained are helpful for watermelon production through gravel-sand mulching. |
| Key words: cropping patterns gravel-sand mulching soil enzyme activity |
