每穴插秧苗数不同对松辽122品种产量及构成因素影响试验研究  

Experimental Study on the Effect of Different Number of Transplanting Seedlings in Each Hole on the Yield and Component Factors of Songliao-122

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作  者:包红霞[1] 耿文良 BAO Hong-xia;GENG Wen-liang(Tongliao Academy of Agricultural Sciences,Tongliao Inner-Mongolia 137400,China;Gongzhuling Songliao Agricultural Science Research Institute,Siping Jilin 136100,China)

机构地区:[1]通辽市农业科学研究院,内蒙通辽028015 [2]公主岭市松辽农业科学研究所,吉林公主岭136100

出  处:《北方水稻》2020年第6期13-16,共4页North Rice

摘  要:以水稻新品种松辽122为试验材料,每穴插秧苗数为1~7苗,随机区组,3次重复,试验田酸碱度pH值6.5,中等肥力,施纯氮(N)肥量180 kg/hm2。试验结果表明:松辽122产量随着穴插秧苗数的增加而提高,但这一升高趋势从处理4以后发生了显著变化,从处理1到处理4的产量增幅较大,达24.2%,而从处理4到处理7的产量增幅变小,仅为8.4%;产量与有效穗数的相关关系达到极显著水平:r=0.99**,其他三个因素(穗粒数、结实率、千粒重)对产量的影响均没有达到显著水平;成穗率随穴插秧苗数的增加,呈先升后降的趋势。通过本研究得出,每穴插3~4苗最为合理,每株秧苗的有效分蘖数量和有效穗数适宜,主要是在主茎上进行一次分蘖,而且分蘖也较早,穗粒结构合理,成穗率较高,能获得最佳产量。A new rice variety Songliao-122 was used as experimental material.The number of transplanting seedlings in each hole is 1~7,randomly divided into groups,repeated three times.The pH value of the experimental field was 6.5,the fertility was medium,and the pure nitrogen(N)fertilizer application rate was 180 kg/hm2.The results showed that:the yield of Songliao 122 increased with the increase of the number of transplanting seedlings,but the increasing trend changed significantly after treatment 4.The yield from treatment 1 to treatment 4 increased by 24.2%,while that from treatment 4 to treatment 7 decreased by 8.4%;the correlation between the yield and the number of effective panicles reached a very significant level:r=0.99**,the other three factors were not significantly affected by the number of grains per ear,seed setting rate and 1000 grain weight.With the increase of the number of seedlings in the hole transplanting,the ear rate increased first and then decreased.Through this study,it is concluded that transplanting 3~4 seedlings per hole is the most reasonable,and the number of effective tillers and ears per seedling is appropriate,mainly one tillering on the main stem,and the tillering is also early,the structure of ear and grain is reasonable,the ear rate is high,and the best yield can be obtained.

关 键 词:松辽122 每穴插秧苗数 产量 有效穗数 成穗率 有效分蘖 

分 类 号:S352.3[农业科学—作物栽培与耕作技术]

 

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