The important sign of physiological maturity of corn is ( ).
A、Bract leaves turn white;
B、Stems and leaves turn yellow;
C、Milk line disappears, and black layer appears;
D、Grain hardens
发布时间：2025-08-14 05:58:19
请在 下方输入 要搜索的题目：
推荐参考答案 (
由 快搜搜题库 官方老师解答 )
答案：Milk line disappears, and black layer appears
相关试题
- 1.The important sign of physiological maturity of corn is ( ).
- 2.The last stage of waxing is the physiological maturity of wheat grain.
- 3.Corn can be harvested when it is in the wax maturity period.
- 4.When it comes to understanding color, it is important to distinguish between color associations of cultural
- 5.Compared with the hybrid corn, the native corn is poor in ______.
- 6.sign sign sign
- 7.corn
- 8.The physiological function of qi is:
- 9.radical sign, root sign
- 10.________ are all in the Corn Belt.
