亚热带丘陵区稻草覆盖对茶园土壤环境、茶叶品质改良及产量的影响

试验研究亚热带丘陵区稻草覆盖对茶园土壤环境、茶品质改良及产量的影响结果表明,稻草覆盖可改良土壤理化性状,促进蚯蚓生长,增加土壤关键层次(0～20cm)关键时期(4～6月份)水分含量,提高水分利用率,达到不同观察时刻、不同深度土壤温度低温时增温、高温时降温及降温时保温的综合动态调控效果,增加同一层次土壤温度的稳定性,有效缩短高温和干旱时间,改善茶叶品质,显著增加茶叶产量,增幅为39.04g/m2。

Effect of straw mulching on soil,tea quality and yield of young tea plantations in hilly subtropical regions

Effect of straw mulching on soil, tea quality and yield of young tea plantations in hilly subtropical regions was studied. Results show that straw mulching improves soil physical properties and fertility, enhances growth of earthworms and increases soil moisture in the critical 0--20cm zone of the soil profile during the critical tea growth period from April to June. At the same time, straw mulching has dynamic effects as raising soil temperature during cold periods and lowering soil temperature during hot periods. Moreover, mulching stabilizes soil temperature within a given siol layer and effectively shortens high soil temperature and desiccation spells. Most importantly, straw mulching improves tea quality and increases tea yield. Tea yield is 39.04g/m^2 higher under straw mulching.