Chinese Journal of Agrometeorology ›› 2018, Vol. 39 ›› Issue (08): 512-517.doi: 10.3969/j.issn.1000-6362.2018.08.003

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Effect of Drought-resistant Agent and Ridged Cultivation on Maize Growth and Yield

LI Qiao-zhen, DING Jun-jun, LI Yu-zhong, XU Chun-ying, GUO Jia-xuan, MAO Li-li, SUN Dong-bao   

  1. 1. Institute of Agricultural Environment and Sustainable Development in Agriculture, CAAS/Key Laboratory of Dry- land Agriculture, Ministry of Agriculture, Beijing 100081, China; 2.Environmental Stable Isotope Laboratory,CAAS, Beijing 100081;3.Beijing University of Agriculture, Beijing 102206
  • Online:2018-08-20 Published:2018-08-13

Abstract: In order to solve the problems of drought in maize seeding season, difficulties in maize seedling emergence and poor seedling quality in northern China, authors developed a drought-resistant agent by selecting suitable drought-resistant substances such as oligosaccharides, chitin, humates and various kinds of additives to ensure seed vigor in the soil and seed emergence rate. By using drought-resistant agent and the ridge planting technique, the field experiment was conducted, consisting of 4 treatments: ridge planting and drought-resistant agent (RD), ridge planting (R), drought-resistant agent (D), and flat planting (CK). The results of the field experiment showed that the application of drought-resistant agent to maize seed could advance the emergence for 1 to 2 days and reduce the fertility period for about one week. Compared with the control, the emergence rate of RD, R, and D treatments increased by 18.3%, 7.2%, and 12.1%, respectively; and the yield increased by 17%, 6%, and 3%, respectively. The results indicated that the drought-resistant agent combined with ridging technique could promote seedling emergence rate, growth and yield of maize.

Key words: Drought-resistant agent, Ridge planting technique, Maize, Seeding emergence rate, Yield