What kind of environment is suitable for earth iron stick yam

As a household vegetable, yam appears on the dining table. The local iron stick yam is a food with high nutritional value and delicious taste. It originated in Henan Province and grows in places with hard soil and slightly dry conditions. Therefore, the iron stick yam contains less water but is rich in many mineral elements that the human body lacks. Below I will introduce to you the growing environment of the native iron stick yam.

1. Soil conditions : Wen County is located between Taihang Mountain and the Yellow River. It belongs to the Huangqin River impact plain, where Qin River, Yiluo River and Yellow River meet. Historically, the Yellow River frequently burst its banks and flooded here, and the river channel rolled here. The soil here has precipitated rich nutrients from various geological conditions in the upper reaches of the Yellow River. Various trace elements are precipitated and gathered here. The land is flat, fertile and loose. The content of total amino acids, crude protein, starch, total sugar, zinc, iron, magnesium and other elements in the iron stick yam produced here is much higher than that in yams from other regions.

2. Water source conditions : Wen County is located at the southern foot of Taihang Mountain. Historically, there were springs all along the mountain plains. "Wen" in Wen County means hot springs. During the Xia Dynasty, it was named Wen State because of the hot springs in the territory (the original site was at the foot of Qingfengling in Wuliyuan Village, Wen County today). The Taihang Mountains are covered with karst landforms and are a typical area of ​​​​Koster terrain development. Rainwater in the mountains can easily seep into the ground and connect with groundwater, which not only makes the groundwater resources here abundant, but also brings rich trace elements to the mountains.

3. Climate conditions : Wen County is located in Jiaozuo area, with mountains behind and rivers in front. In winter, the cold air from the north is blocked by Taihang Mountains, and in summer, it is regulated by the Yellow River and other rivers in the area. As a result, the winter is not too cold, the summer is not too hot, it is neither too humid nor too dry, the climate is mild, the frost-free period is long, the accumulated temperature is high, and the crop growing period is relatively extended. This results in some unique features of Wenxian iron stick yam in its external morphology, physiological function and synthesis of effective ingredients. As the Jiaozuo area extends northward, the accumulated temperature gradually decreases, which cannot guarantee the effective growth period of the iron stick yam, and it is easily affected by severe weather such as cold currents and frost, affecting the yield and quality. The temperature in the south of Wen County gradually rises, the rainfall is sufficient, the humidity is high, and the day and night are shorter, which is not conducive to the growth of the iron stick yam and the accumulation of dry matter in the tubers. The tubers have high water content and poor quality.

These unique climate conditions, water source conditions and soil conditions are the main reasons for the unique quality of Wenxian Iron Stick Yam. Long-term practice has proved that even if Wenxian Iron Stick Yam is introduced from other places, its quality is far inferior to that of the Iron Stick Yam grown in Wenxian County. Wenxian Iron Stick Yam is the product of the perfect combination of variety characteristics, natural environment and cultural activities.