旱作绿豆组合覆盖的增产机理

针对陕北黄土高原丘陵沟壑区干旱少雨的特点,连续3 a对绿豆进行不同组合覆盖对比试验,对旱作绿豆组合覆盖的土壤水分、温度、养分等对绿豆生长、发育及产量有影响的环境因素进行动态监测.结果表明,不同组合覆盖措施均能显著提高土壤含水率,可降解地膜覆盖在绿豆生长后期的土壤温度明显低于常规地膜,降解膜侧播种措施较对照增产66.2%,居各措施之首.阐述了不同组合覆盖措施下绿豆的增产机理.

Mechanism of Increasing Yield of Rain-fed Mung Bean under Combined Coverage

This paper explored contrast tests of various combined coverage of mung bean, aiming at the loess plateau hilly and gullied region of the north of Shaanxi Province where is drought and lack of rain. Through dynamic monitoring the soil environmental factors, such as moisture, temperature and nutrients, which influence the growing, developing and yields of rain-fed mung bean. The result indicated that, all different combined coverage measures can increase soil water content markedly, the soil temperature that covered by degradable plastic film is lower markedly than that of conventional film coverage, the increasing production range that plant in edge of degradable plastic film is up to 66. 2%, compared with CK, stand first on the list of other coverage measures. Mechanism of increasing yield was also summarized under different measures of combined coverage.