| Resource utilization & environmental protection |
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| Effects of reducing fertilizer and pesticide combined with applying Si-Ca-K-Mg fertilizer on wheat yield, quality, and prevention and control of the wheat scab |
Huimin LU( ),Qiwei HUANG,Yixin WU,Yongchao LIANG,Hongyun PENG() |
| Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China |
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Abstract Using a three-factor two-level randomized block design, the ‘Sumai 188’ variety was taken as the field experimental material to set up two levels of fertilization, i.e., conventional fertilization and reducing 20% of fertilizer, two levels of applying silicon fertilizer, i.e., within Si-Ca-K-Mg fertilizer (150 kg/hm2 Si, Si1) and without Si-Ca-K-Mg fertilizer (Si0), together with two levels of applying pesticides, i.e., within applying pesticides and without applying pesticides. There were eight treatments for 24 plots in total with three replicates. The effects of applying Si fertilizer combined with reducing fertilizers and pesticides on wheat yield, quality, and resistance to wheat scab were studied. The results showed that, as compared with other treatments, applying Si combined with reducing fertilizers and pesticides increased stem wall thickness of wheat by 29.6%-36.5%, and applying Si combined with fertilizers and reducing pesticides significantly increased wheat yield by 9.4%-47.0%. Compared with the treatment of Si0, the increased wheat yield was noted by 7.3%-21.4%, and the increased wheat lodging resistant index by 12.6%-37.6% in the treatment of Si1, respectively. The incidence of wheat scab was 16.5% by applying Si combined with reducing fertilizers and pesticides. Therefore, applying Si combined with reducing fertilizers and pesticides can effectively increase the stem wall thickness and wheat yield, improve the lodging resistance of wheat, significantly reduce the incidence of wheat scab. The application of Si-Ca-K-Mg fertilizer has positive significance for reducing the dosage of fertilizer and pesticide.
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Received: 02 April 2021
Published: 29 April 2022
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Corresponding Authors:
Hongyun PENG
E-mail: 21914138@zju.edu.cn;penghongyun@zju.edu.cn
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减肥减药配施硅钙钾镁肥对小麦产量品质及赤霉病防控的影响
采用三因素二水平随机区组设计，以‘苏麦188’品种为试验材料，设置常规施肥和减施20%肥的2个施肥水平，施硅钙钾镁肥（150 kg/hm2 Si）和不施硅钙钾镁肥的2个施硅肥水平，以及施药和不施药的2个施药水平，共8个处理24个小区，每个处理设置3个重复，以研究减肥减药配施硅肥对小麦产量、品质和抗赤霉病的影响。结果表明：减肥减药配施硅肥使小麦茎壁厚增加29.6%～36.5%，常规施肥减药配施硅肥的小麦产量显著提高9.4%～47.0%；与不施硅肥处理相比，减肥减药配施硅肥组小麦产量显著增加7.3%～21.4%，小麦抗倒伏指数提高12.6%～37.6%；减肥减药配施硅肥组小麦穗部赤霉病发病率为16.5%。因此，减肥减药配施硅肥可有效增加小麦茎壁厚，提高小麦抗倒伏能力和小麦产量，显著降低小麦赤霉病的发生率。硅钙钾镁肥的施用对小麦大田减肥减药具有积极意义。
关键词：
硅钙钾镁肥,
氮肥农药减施,
抗倒伏,
小麦赤霉病,
产量品质
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