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根据实际的苗木密度和作物气状况,在直接种子大米中确定气上衣率

Bilin Peng¹, Xinyu Wang¹, Xiangyu Hu¹

¹Rice Research Institute of Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory of New Technology in Rice Breeding/Guangdong Rice Engineering Laboratory/Key Laboratory of Genetics and Breeding of High-Quality Rice in Southern China (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Guangzhou, PR China.

Journal of the science of food and agriculture

|November 10, 2023

概括

本研究提出了一种定量方法,以优化直接种子大米的 (N) 装饰. 通过监测实际的苗木密度和植物N状态,农民可以精确地调整N应用以提高产量稳定性.

科学领域:

农业学和作物科学农业学和作物科学
土壤科学和植物营养植物营养

背景情况:

直接播种大米中 (N) 管理对于产量稳定至关重要.
上一篇 N 上衣调整在很大程度上是经验性的.
需要一种量化方法,将N输入与作物需求联系起来.

研究的目的:

开发一种定量方法来确定N个顶部装饰率.
为了确定耕作 (N_til) 和恐慌启动 (N_PI) 阶段的费率.
以实际种植密度 (ASD) 和植物N状态为N率的基础.

主要方法:

进行了不同播种速度和N顶部装饰策略的实地实验.
使用线性回归分析来建模变量之间的关系.
监测实际苗木密度 (ASD),N种植率 (N_til,N_PI),种植者数量和N种植率.

主要成果:

在恐慌开始时的提勒数 (TIL_PI) 被ASD和N_til准确地预测 (R² = 0.8870.936).
N_til可以使用ASD和目标机号来确定.
谷物产量受到开始时N吸收 (NUP_PI) 和N_PI (R² = 0.8140.783) 的显著影响,允许根据目标产量计算N_PI.

结论:

建立了直接种子大米中N顶部装饰的定量框架.
该方法依赖于监测ASD和植物N状态.
这种方法提高了N管理的精度,以提高收益率稳定性.

关键词:

的实际种植密度.直接种子大米直接种子大米最多的车头数量是最大的.管理管理植物的状态植物的状态

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