不同作物填闲对辣椒幼苗生长及产量的影响

研究通过两年田间试验,并结合盆栽试验,以小麦、蚕豆及大叶臭菜3种为填闲作物,以不填闲为对照,分别选择小麦、蚕豆、大叶臭菜、小麦+蚕豆、小麦+大叶臭菜、蚕豆+大叶臭菜和小麦+蚕豆+大叶臭菜开展填闲,共计8个处理,通过田间和盆栽试验分别研究其对辣椒产量和幼苗生长的影响.两年田间试验结果表明,小麦+蚕豆、小麦+大叶臭菜、小麦+蚕豆+大叶臭菜混合填闲等3个处理均显著提高连作辣椒产量;选取田间试验种植辣椒后的土壤开展辣椒幼苗盆栽试验.结果表明,小麦+蚕豆、小麦+大叶臭菜、小麦+蚕豆+大叶臭菜混合填闲处理后,在10、20、30 d辣椒幼苗株高、全株干、鲜重及各级根长均显著提高.综上,填闲后连续种植两茬辣椒仍具有促生效果,具有持续性.

Effects of cover crops usage on growth and yield of pepper seedlings

The study investigated the effects of different cover crops composition on pepper seedling growth and yield under two-year greenhouse experiment and pot experiment, wheat, faba bean and large leaf smelly vegetable were used as cover crops, there were eight treatments, wheat,faba bean, large leaf smelly vegetable, wheat+faba bean, wheat+large leaf smelly vegetable, faba bean+large leaf smelly vegetable, wheat+faba bean+large leaf smelly vegetable and no cover crop treatment served as control. The results found that the treatments of wheat + faba bean, wheat+ large leaf smelly vegetable and wheat+faba bean+large leaf smelly vegetable significantly increased pepper yield in twoyear greenhouse experiment. The soils sampled from the two-year greenhouse experiment were used for the pot experiment. The results showed that the soils sampled from wheat+faba bean, wheat+large leaf smelly vegetable and wheat + faba bean + large leaf smelly vegetable treatments significantly increased plant height, plant fresh and dry weight and root length at different levels of pepper seedling at 10, 20 and 30 d. Overall, planting cover crops exhibited the promoting effects on the growth and yield of pepper in the two year, indicating that the roles of planting cover crops on subsequent plant growth has persistence.