›› 2020, Vol. 32 ›› Issue (9): 1626-1633.DOI: 10.3969/j.issn.1004-1524.2020.09.11

• Horticultural Science • Previous Articles     Next Articles

Effects of different mulching methods on yield, quality and soil nutrients of open-air loose-curd cauliflower on plateau in summer

LI Jinwu1, YU Jihua1, LYU Jian1,*, FENG Zhi1, YANG Haixing2, CHE Xusheng1, QIN Qijie1, ZHANG Yang1, JIN Ning1   

  1. 1. College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China;
    2. Yuzhong Agricultural Technology Extension Center, Yuzhong 730100, China
  • Received:2020-03-12 Online:2020-09-25 Published:2020-10-10

Abstract: In order to find out the effect of different mulching methods on yield, quality and soil nutrients of the open ground loose-curd cauliflower on theplateau in summer, the field experiment, five mulching methods were adopted, including plastic film and straw mulching (T1), straw mulching between rows (T2), whole straw mulching (T3), open field without mulching (CK1) and plastic film mulching (CK2), the yield, quality, mineral element content, irrigation amount, irrigation utilization efficiency, and soil nutrient content of loose-curd cauliflower were measured and analyzed. The results showed that the surface mulching could reduce the irrigation amount in the whole growth period of the loose-curd cauliflower, and the yield and water production efficiency of T1 treatment were higher than those of other treatments. Compared with CK1 and CK2, T1 could save water by 29.0% and 7.3%, increase production by 68.9% and 4.7%, and irrigation water use efficiency increasedby 6.12 and 1.22 percent points. The content of soluble sugar and vitamin C in T1 treatment was higher than that in other treatments, and the content of nitrate was the lowest. Compared with CK1 and CK2, T1, T2 and T3 treatment could improve the mineral element content of flower ball, and T3 treatment had the most significant effect. The content of soil organic matter, total phosphorus in T1 treatment was 29.6%, 108.4% higher than that in CK1, and the content of total nitrogen, total potassium, soil calcium, magnesium and manganese had no significant difference from CK1; The content of soil organic matter, total nitrogen, total phosphorus and manganese in T1 treatment was 14.7%, 80.0%, 52.0% and 105.3% higher than that in CK2, and the content of total potassium, soil calcium and magnesium had no significant difference with CK2. The treatment of plastic film and strawmulching had the effect of conserving soil moisture and increasing production, improving the quality of loose-curd cauliflower and improving the soil environment, effectively realizing the recycling of crop straw, avoiding the environmental problems caused by local straw burning, and promoting the sustainable development of agriculture in this area.

Key words: mulching method, soil nutrient, quality, yield, loose-curd cauliflower

CLC Number: