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兼顾江汉平原水稻产量和品质提高的优化施锌量研究OACSTPCD

Optimal Zinc Application Rate for Rice Yield and Quality Improvement in Jianghan Plain

中文摘要英文摘要

在大田条件下,以4个水稻品种(立香85、象牙香占、合两优927、昌两优8号)为试验材料,通过基施锌肥研究不同施锌量[0 kg/hm2(CK)、7.5 kg/hm2(Zn1)、15 kg/hm2(Zn2)、30 kg/hm2(Zn3)]下水稻产量、品质的变化,为江汉平原优质稻锌肥施用提供理论依据.结果表明,施锌可以显著提高水稻产量,且水稻产量随着施锌量的增加呈先上升后降低的趋势,总体上以Zn2处理最高,Zn1处理次之.立香85、合两优927、昌两优8号以Zn2处理产量最高;象牙香占以Zn1处理产量最高,Zn2处理次之.施锌处理产量较CK增加了8.1%~28.8%.施锌对稻米加工品质有明显的改善作用,整体以Zn1和Zn2处理下糙米率、精米率、整精米率较高.不同施锌处理下直链淀粉含量因品种而异,其中,立香85以Zn1处理最高,昌两优8号以Zn2处理最高,象牙香占和合两优927以Zn3处理最高.对于淀粉RVA谱特征值,立香85、象牙香占、昌两优8号均以Zn1处理崩解值最高;消减值表现为立香85和合两优927在CK下最低,象牙香占和昌两优8号在Zn1处理下最低.各品种粗蛋白含量随施锌量的增加呈先升高后降低的趋势,其中,立香85、合两优927均以Zn1处理粗蛋白含量最高,象牙香占和昌两优8号均以Zn2处理粗蛋白含量最高.总体上,清蛋白、球蛋白和醇溶蛋白含量均以Zn2处理最高,谷蛋白含量以Zn1处理最高.糙米、精米锌含量也随着施锌量的增加呈现先增加后降低的趋势.其中,立香85、合两优927均以Zn1处理糙米锌含量最高,分别为23.1、19.8 mg/kg;象牙香占和昌两优8号均以Zn2处理最高,分别为20.0、17.7 mg/kg.各品种糙米锌含量均大于精米锌含量.综合水稻产量、品质等多方面因素来看,江汉平原施锌处理以Zn1—Zn2为优,施锌量为7.5~15 kg/hm2.

Four rice varieties(Lixiang 85,Xiangyaxiangzhan,Heliangyou 927 and Changliangyou 8)were selected as materials,and the changes of rice yield and quality were studied under four zinc application rates[0 kg/ha(CK),7.5 kg/ha(Zn1),15 kg/ha(Zn2)and 30 kg/ha(Zn3)]in field,so as to provide a theoretical basis for the application of zinc fertilizer in high-quality rice.The results showed that zinc application could significantly increase rice yield,and the rice yield showed a trend of first increasing and then decreasing with the increase of zinc application rate.Overall,the highest yield was observed in Zn2 treatment,followed by Zn1 treatment.The yields of Lixiang 85,Heliangyou 927 and Changliangyou 8 were the highest under Zn2 treatment,and the yield of Xiangyaxiangzhan was the highest under Zn1 treatment,followed by Zn2 treatment.Compared with CK,the yields of zinc application treatments increased by 8.1%—28.8%.Zinc had an obvious optimization effect on the processing quality,and the brown rice rate,milled rice rate and head rice rate were generally higher under Zn1 and Zn2 treatments.The amylose contents of different zinc treatments varied for different varieties,among which Lixiang 85 was the highest under Zn1 treatment,Changliangyou 8 was the highest under Zn2 treatment,and Xiangyaxiangzhan and Heliangyou 927 were the highest under Zn3 treatment.For characteristic values of RVA spectrum,the breakdown of Lixiang 85,Xiangyaxiangzhan and Changliangyou 8 was the highest under Zn1 treatment,while the setback of Lixiang 85 and Heliangyou 927 was the lowest under CK,and that of Xiangyaxiangzhan and Changliangyou 8 was the lowest under Zn1 treatment.The crude protein content of all varieties increased first and then decreased with the increase of zinc application rate.The crude protein contents of Lixiang 85 and Heliangyou 927 were the highest under Zn1 treatment,and thoese of Xiangyaxiangzhan and Changliangyou 8 were the highest under Zn2 treatment.Overall,the contents of albumin,globulin and prolamine were the highest under Zn2 treatment,and the content of globulin was the highest under Zn1 treatment.The content of zinc in brown rice and milled rice also increased first and then decreased with the increase of zinc application rate.Lixiang 85 and Heliangyou 927 had the highest zinc content in brown rice under Zn1 treatment,which were 23.1 mg/kg and 19.8 mg/kg,respectively;the zinc contents in brown rice of Xiangyaxiangzhan and Changliangyou 8 were the highest under Zn2 treatment,which were 20.0 mg/kg and 17.7 mg/kg,respectively.In addition,the content of Zn in brown rice was higher than that in milled rice.Considering rice yield,quality and other factors,the optimal zinc application rate in Jianghan Plain is 7.5-15 kg/ha.

刘越;田小海;周梦;罗海伟;党程成;郝蓉蓉;胡玉婷;严鹏;陈龙周;刘洋旋

长江大学 农学院,湖北 荆州 434025||长江大学 主要粮食作物产业化湖北省协同创新中心,湖北 荆州 434025长江大学 农学院,湖北 荆州 434025||长江大学 主要粮食作物产业化湖北省协同创新中心,湖北 荆州 434025||大悟楚才高中,湖北 孝感 432000湖北省智慧农业有限公司,湖北 武汉 430000

农业科学

水稻锌肥产量品质锌含量

RiceZinc fertilizerYieldQualityZinc content

《河南农业科学》 2024 (003)

43-52 / 10

湖北省重点研发计划项目(2020BBB060)

10.15933/j.cnki.1004-3268.2024.03.004

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