| Compensation effects of ridge and furrow mulching on growth and yield of late\|sown summer maize |
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| DOI：10.7606/j.issn.1000-7601.2022.04.07 |
| Key Words: summer maize sowing date ridge and furrow mulching soil moisture and heat growth yield |
| Author Name | Affiliation | | YANG Zhichao | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China | | LI Yuannong | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China | | GU Xiaobo | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China | | CHEN Yitong | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHAO Xiao | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| To solve the adverse effects of late sowing on the growth and development of summer maize, three planting methods including ridge with plastic film mulching and furrow without mulching (LN), ridge with plastic film mulching and furrow with straw mulching (LJ), ridge and furrow with plastic film mulching (LM) were adopted. The conventional sowing period flat planting without mulching (CK1) and late flat planting without mulching (CK2) were used as controls. The effects of different ridge and furrow planting methods on field soil moisture, soil temperature, growth and yield of late\|sown summer maize were analysed, and the compensation effects of different methods were compared. The results showed that the ridge and furrow planting pattern significantly increased the soil temperature in the 0~25 cm soil layer of summer maize and promoted the growth of late\|sowing summer maize. During the growth period, the moisture content of 0~200 cm soil layer was maintained at 18% (75% of field capacity) or higher in each treatment, thus the influence of film mulching on soil moisture was not obvious. The overall growth status of summer maize planted in ridge and furrow planting pattern caught up with the CK1 treatment in mid\|to\|late August (tasselling to filling stage). The above\|ground dry matter reached or exceeded the CK1 treatment at the maturity stage. Low temperature and heavy rainfall resulted in the extended growth period of late\|sowing summer maize by 8~9 days. The lodging rate of ridge and furrow planting was low, and the highest value was only 3%. The lodging rate of CK1 and CK2 treatment was 73.1% and 20.1%, respectively. All growth and yield indicators of CK2 treatment were low throughout the growth period. LJ treatment had poor growth status in the early stage and greedy growth in the later stage, and ultimately reduced production by 7.9% compared with CK1 treatment. The yield of LN treatment was 9 783.8 kg·hm-2, which was the same as that of CK1 treatment. The highest yield of LM treatment reached 11 101.7 kg·hm-2, which was an increase of 12.2% compared with CK1 treatment. Considering soil moisture and heat, growth and yield of summer maize, the ridge mulching and furrow mulching method achieved the best compensation effect under rainy conditions. |
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