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旱作晋糯4号高粱的需肥量及吸肥特性的研究

Fertilizer Requirement and Fertilizer Absorption Characteristics of Dry-Farming ‘Jin Nuo 4’Sorghum
作者
曹昌林(山西省农业科学院高粱研究所)
张建华(山西省农业科学院高粱研究所)
白文斌(山西省农业科学院高粱研究所)
史丽娟(山西省农业科学院高粱研究所)
中文关键词
旱作;晋糯4号高粱;需肥量;吸肥特性
英文关键词
Dry farming; “Jin Nuo 4”Sorghum ; Amount of fertilizer required; Suction characteristics
中文摘要
为新品种晋糯4号的大力推广提供技术支撑,本试验运用“311-A”二次回归最优设计法进行了最大需肥量的研究,运用室内测试植株养分含量的方法进行了吸肥特性的研究。结果表明:旱作晋糯4号高粱最高产量的需肥量为纯N 174.99 kg/hm2,P2O5 96.43 kg/hm2,K2O 165.68 kg/hm2;其对氮、磷、钾素的吸收表现为:10片展开叶之前吸氮27.34 kg/hm2、吸磷1.8 kg/hm2、吸钾17.12 kg/hm2,11~20片展开叶时段吸氮191.0 kg/hm2、吸磷16.1 kg/hm2、吸钾185.6 kg/hm2,20片展开叶-成熟阶段吸氮36.08 kg/hm2、吸磷7.93 kg/hm2、吸钾14.55 kg/hm2。结论:晋糯4 号高粱的最大需肥量为纯N 174.99 kg/hm2,P2O5 96.43 kg/hm2,K2O 165.68 kg/hm2;全生育期吸肥量以氮最多,钾次之,磷最少。
英文摘要
To provide technical support for the promotion of the new variety“Jin Nuo 4”, the maximum amount of fertilizer required was studied using the "311-a" quadratic regression optimal design method and the characteristics of fertilizer absorption was studied using the method of indoor testing plant nutrient content on this experiment. The results showed that the fertilizer requirement for the highest yield of “Jin Nuo 4”sorghum in dry farming was174.99 kg/hm2 of pure N, 96.43 kg/hm2of P2O5 and 165.68 kg/hm2of K2O. The absorption of nitrogen, phosphorus and potassium by “Jin Nuo 4”was as shown follows: nitrogen absorption 27.34kg /hm2, phosphorus absorption 1.8kg /hm2, potassium absorption 17.12kg /hm2 before 10 leaves were opened. Nitrogen absorption 191.0kg /hm2, phosphorus absorption 16.1kg /hm2, potassium absorption 185.6kg /hm2 during 11~20 extended leaf periods. Nitrogen absorption 36.08 kg/hm2, phosphorus absorption 7.93 kg/hm2 and potassium absorption 14.55 kg/hm2 during the 20 open leaves to the mature stage. Conclusion: the maximum fertilizer requirements of “Jin Nuo 4” sorghum were pure N 174.99 kg/hm2, P2O5 96.43 kg/hm2 and K2O 165.68 kg/hm2. the amount of nitrogen absorption was the most, followed by potassium, and phosphorus was the least during the whole growth period.
DOI10.11924/j.issn.1000-6850.casb19030011