相关实验视频

Updated: Jan 29, 2026

Determination of the Absorption, Translocation, and Distribution of Imidacloprid in Wheat
06:11

Determination of the Absorption, Translocation, and Distribution of Imidacloprid in Wheat

Published on: April 28, 2023

2.3K

灌实践和N添加率对干旱地的小麦营养积累和利用的影响

Cuiping Zhao1, Kaiming Ren1, Yuhao Sun1

  • 1College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China.

Plants (Basel, Switzerland)
|January 28, 2026
PubMed
概括

优化干旱地区的小麦产量需要仔细管理灌和气. 一次性灌与180公斤N/ha (N180) 结合,显著提高了小麦产量和营养使用效率.

关键词:
N 增值率 N 的增值率干旱地区 干旱地区营养物质使用效率效率.一次性灌方式小麦小麦小麦小麦小麦小麦小麦.收益率 收益率 收益率 收益率

更多相关视频

Film Extrusion of Crambe abyssinica/Wheat Gluten Blends06:51

Film Extrusion of Crambe abyssinica/Wheat Gluten Blends

Published on: January 17, 2017

10.5K
Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique07:06

Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique

Published on: September 28, 2022

2.0K

相关概念视频

Design Example: Design of an Irrigation Channel01:27

Design Example: Design of an Irrigation Channel

Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...
824
Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)01:27

Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)

α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition.
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are...
4.3K
Absorption of Nutrients01:19

Absorption of Nutrients

Absorption refers to taking dietary nutrients from the intestinal lumen for transportation throughout the body. After digestion in the small intestine, carbohydrates, proteins, and fats are broken down into simpler forms. These essential macronutrients and other vital substances, such as vitamins, minerals, and water, are then prepared for absorption into the bloodstream.
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
3.5K
Conjugate Addition of Enolates: Michael Addition01:08

Conjugate Addition of Enolates: Michael Addition

The attack of a nucleophile at the β carbon of an α,β-unsaturated carbonyl compound is called conjugate addition. Conjugate addition reactions of active methylene compounds, such as β-diketones, β-keto esters, β-keto nitriles, and α-nitro ketones, are called Michael addition reactions.
3.6K
Measuring Reaction Rates03:09

Measuring Reaction Rates

Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...
28.9K
Reaction Rate02:53

Reaction Rate

The rate of reaction is the change in the amount of a reactant or product per unit time. Reaction rates are therefore determined by measuring the time dependence of some property that can be related to reactant or product amounts. Rates of reactions that consume or produce gaseous substances, for example, are conveniently determined by measuring changes in volume or pressure.
The mathematical representation of the change in the concentration of reactants and products, over time, is the rate...
62.7K