引用本文: | 曲兆凯,田军仓,闫新房.稻蟹模式下水层深度、追肥量、放蟹密度及饲料投喂量最优组合试验研究[J].灌溉排水学报,0,():-. |
| quzhaokai,tianjuncang,yanxinfang.稻蟹模式下水层深度、追肥量、放蟹密度及饲料投喂量最优组合试验研究[J].灌溉排水学报,0,():-. |
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摘要: |
【目的】为解决宁夏贺兰县稻蟹模式下水肥利用率不高,放蟹密度、饲料投喂量不明确等问题。【方法】采用四因素三水平正交试验,研究了水层深度(5cm,8cm,11cm),追肥量((60+1 500+3 000)kg/hm2),(75+3 000+4 500) kg/hm2),(90+4 500+6 000)kg/hm2)、放蟹密度(60kg/hm2,90kg/hm2,120kg/hm2)、饲料日投喂量(7.2kg/hm2,9kg/hm2,10.8kg/hm2)对水稻与河蟹生长、产量和品质的影响。【结果】①四因素对水稻与河蟹产量的影响顺序分别为F>H>D>S和D>H>F>S,且均达到显著水平。②水稻与河蟹产量、蟹肉氨基酸总量随H和F增加而增加,稻米食味值随H的增加而增加,随F的增加先增后减,水稻产量和蟹肉氨基酸总量随D与S的增加先增后减,河蟹产量和稻米食味值随D的增加而增加,随S的增加而减少。【结论】通过极差、方差与主成分分析得出,四因素最优水平组合为:H为11cm,F为6+300+400kg·667m-2(尿素+沼渣+沼液)、D为6 kg·667m-2,S为480g·667m-2时,水稻与河蟹产量最高,分别为653.32 kg·667m-2和19.64 kg·667m-2,较CK分别增产24%和37.6%;同时,稻米食味值与蟹肉氨基酸总量也最高,分别为83.7分和15.85g·100g-1,较CK分别增加6.9%和24.8%。 |
关键词: 宁夏;稻蟹模式;最优组合方案;提质增效;现代化生态灌区 |
DOI: |
分类号:S274.1 |
基金项目:宁夏自治区重点研发计划重大项目“宁夏现代化生态灌区关键技术集成研究与示范”;宁夏高等学校一流学科建设项目 |
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Experimental Study on Optimal Combination of Water Layer, Topdressing amount, Stock Density of Crab and Feed Quantity under Rice-Crab Mode |
quzhaokai1, tianjuncang2,3,4, yanxinfang2,3,4
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1.School of Civil Engineering and Water Conservancy,Ningxia University;2.1.School of Civil Engineering and Water Conservancy,Ningxia University,Yinchuan 750021,China;3.2.Ningxia Research Center of Technology on Water-saving Irrigation and Water Resources Regulation,Yinchuan 720021,China;4.3.Engineering Research Center for Efficient Utilization of Water Resources in Modern Agriculture in Arid Regions,Yinchuan 750021,China)
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Abstract: |
【Background】In order to solve the problems of low utilization rate of water-fertilizer. undefined crab density and feed dosage under rice-crab mode in Helan County, Ningxia.【Objective】Four factors and three levels of orthogonal test were used to study the effects of different depth of water layer(5cm, 8cm, 11cm), fertilization((60+1 500+3 000)kg/hm2), (75+3 000+4 500) kg/hm2), (90+4 500+6 000)kg/hm2), stock density of crab(60kg/hm2, 90kg/hm2, 120kg/hm2) and daily feed quantity (7.2kg/hm2, 9kg/hm2, 10.8kg/hm2)on growth, yield and quality of rice and crab.【Result】①the orders of four factors affecting the yield of rice and crab were F>H>D>S and D>H>F>S, and all four factors reached the significant level.②The yield of rice and crab、the total amino acid content of crab muscle increased with the increase of H and F. Taste value of rice increased with the increase of H, and increased first and then decreased with the increase of F. yield of Rice and total amino acids of crab muscle increased first and then decreased with the increase of D and S. The yield of crab and Taste value of rice increased with the increase of D, but decreased with the increase of S.【Conclusion】According to range、variance and principal component analysis, the optimal level combination of factors is determined as follows: H is 11cm, F is 6+300+400kg/667m2 (urea + biogas residue +biogas slurry), D is 6kg/667m2, S is 480g/667m2, the yields of Rice and crab were the highest, which were 653.32kg/667m2 and 19.64kg/667m2, respectively, and increased by 24% and 37.6% compared with CK. Meanwhile, taste value of rice and total amino acid of crab muscle were the highest, which were 83.7 points and 15.85g/100g, respectively, increased by 6.9% and 24.8% compared with CK. |
Key words: Ningxia; Rice-crab culture; Optimal combination scheme; improvement of quality and efficiency; Modernized ecological irrigation area |