Planting conditions of rice and wheat

1. Rice is planted in rice fields in the south, mainly distributed in subtropical and tropical areas of China, and also planted in the northeast. However, due to the low temperature, the ripening system is only one year, while in the south, it is two or three times a year.

General heat resources ≥ 10℃ and accumulated temperature of 2000-4500℃ are suitable for planting one-season rice; The temperature of 4500 -7000℃ is suitable for planting double cropping rice.

5300℃ is the safe limit of double cropping rice; Three-season rice can be planted in places above 7000℃.

2. Growing wheat in dry land requires relatively little water.

Spring wheat is planted in very cold places in winter. Because winter is too cold to sow, it is planted after spring, which is called spring wheat. Winter wheat is planted in warm places. Sow in winter and harvest in summer. For example, spring wheat is planted in Northeast China, and winter wheat is planted in North China and its south.

Winter wheat should be sown in autumn and harvested in late spring. In China, it is generally bounded by the Great Wall, with spring wheat in the north and winter wheat in the south.

Extended data:

Reasons for Suitable Rice Planting in South China;

1, the southern latitude is low, and the solar illumination conditions are good; ?

2. There are many low mountains and hills in the south, and the terrain fluctuates slightly; ?

3. There is abundant precipitation, dense river network and sufficient irrigation water in the south.

On the other hand, rice needs good light conditions and sufficient water resources to meet its growing period.

The reason why wheat is suitable for planting in northern China;

1, vernalization. Wheat must undergo low temperature conditions to promote flower bud formation and flower organ development. The temperature in the north is low, and wheat is easy to pass the vernalization stage.

2. Low temperature, long illumination time and large temperature difference between day and night are beneficial to the formation of wheat protein. So the north is suitable for growing wheat.

Rice is suitable for growing in the south and wheat is suitable for growing in the north. It is also because rice needs high temperature, and wheat must grow through low temperature. Low temperature in the north is not suitable for rice growth, and high temperature in the south is not suitable for wheat growth.