| Effects of dual mulching on soil moisture, growth and yield of kiwifruit in Guanzhong Plain |
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| DOI：10.7606/j.issn.1000-7601.2023.04.20 |
| Key Words: dual mulching water competition photosynthetic parameters kiwifruit yield fruit quality |
| Author Name | Affiliation | | YANG Shiyu | Key Laboratory of Agricultural Soil and Water Engineering in Arid Regions, Ministry of Education, College of Water Conservancy and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | CAO Hongxia | Key Laboratory of Agricultural Soil and Water Engineering in Arid Regions, Ministry of Education, College of Water Conservancy and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | SUN Tao | Key Laboratory of Agricultural Soil and Water Engineering in Arid Regions, Ministry of Education, College of Water Conservancy and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | NAN Xueping | Shaanxi Fruit Technology Group Co., LTD., Yangling, Shaanxi 712100, China | | ZHAO Kai | Shaanxi Fruit Technology Group Co., LTD., Yangling, Shaanxi 712100, China | | LI Zhijun | Key Laboratory of Agricultural Soil and Water Engineering in Arid Regions, Ministry of Education, College of Water Conservancy and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| To investigate the effects of different mulching modes on kiwifruit growth and fruit yield and quality in Guanzhong Plain, four mulching modes were set up: in\|row fabric mulching and inter\|row grass covering (F1G1), in\|row fabric mulching and inter\|row bare land without mulching (F1G0), in\|row bare land without mulching and inter\|row grass covering (F0G1) and bare land without mulching (CK). F1G1 was a dual mulching mode. F1G0 and F0G1 were single mulching modes. CK was a non\|mulching mode. The soil moisture, growth physiology and fruit yield and quality of kiwifruit at different growth stages were analyzed and compared. The results showed that, at the sprout period and blossom and fruit period of kiwifruit, the dual mulching mode effectively improved the soil water environment. The difference ratio of soil water content between in\|row and inter\|row (SMDR) was the lowest at the 20~100 cm soil layer, indicating the least soil water competition. Compared with CK, the soil moisture content in 0~100 cm soil layer between in\|row and inter\|row increased during both fruit expansion and fruit maturity periods. Different mulching modes had different effects on vegetative growth and photosynthetic physiological parameters of kiwifruit trees at different growth stages. Single mulching treatment F0G1 had the most significant effect on the cumulative growth of new shoot length and diameter, followed by dual mulching F1G1. However, the net photosynthetic rate (Pn) of F1G1 increased by 19.0% and 20.6% compared with that of F0G1 at fruit expansion stage and fruit maturity stage. Different mulching modes improved kiwifruit yield, and dual mulching treatment F1G1 had the most significant improvement effect on kiwifruit yield per plant compared with CK by 14.9%, followed by F0G1 treatment and F1G0 treatment. The soluble sugar content, sugar and acid ratio of kiwifruit of F1G1 significantly increased by 21.9% and 45.1% compared with CK, and the value of sugar and acid ratio was larger than other treatments. In conclusion, the adoption of dual mulching (in\|row fabric mulching and inter\|row grass covering) in kiwifruit orchards in Guanzhong Plain was beneficial to promote tree growth, increase yield and improve fruit quality. |
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