选择元素值未与Angular中的其他表单元素一起发送

<form [formGroup]="myForm">
  <select formControlName="mySelect">
    <option value="">请选择</option>
    <option value="option1">选项1</option>
    <option value="option2">选项2</option>
  </select>
</form>

import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';

@Component({
  selector: 'app-my-component',
  templateUrl: './my-component.component.html',
  styleUrls: ['./my-component.component.css']
})
export class MyComponent implements OnInit {
  myForm: FormGroup;

  constructor(private formBuilder: FormBuilder) { }

  ngOnInit() {
    this.myForm = this.formBuilder.group({
      mySelect: ['', Validators.required]
    });
  }
}