Indica rice, as a widely planted crop in southern China, has always been an important topic in agricultural research. So, what is the upper limit of the altitude at which Indica is grown? What is the impact of this upper limit on the growth and yield of indica?
First of all, indica is a warm-season crop that prefers warm and humid climatic conditions. Generally speaking, the suitable altitude for planting indica rice is about 0-1000 meters, but this suitable altitude also varies due to geographical location, season, climate and other factors. For example, indica rice is widely distributed in the tropical areas of South China and the ** zone south of the Huai River, and the climatic conditions in these areas are suitable for indica rice growth.
Studies have shown that 1800 meters above sea level is the dividing line between indica and japonica rice. Indica rice is suitable for cultivation below 1800 meters above sea level, while japonica rice is more suitable for cultivation above 1800 meters. Indica rice is more suitable for planting in low latitude, low altitude, humid and hot areas, such as southern China. Indica rice is generally grown in 1 year and 2 years and 3 crops in most parts of the south, and is more suitable for cultivation in low latitudes and low altitudes in the south due to its very poor cold tolerance.
As the altitude increases, the temperature gradually decreases. In general, every 100 meters of temperature increase is equivalent to 200 kilometers of southward movement. This means that at lower altitudes, temperatures are higher and more suitable for rice farming. At higher altitudes, where temperatures are relatively cool, indica cultivation may not be suitable. In addition, the increase in altitude has an impact on the amount of precipitation. Due to the high terrain, water vapor in high altitude areas is prone to precipitation due to cooling during its ascent, so the amount of precipitation is more than that in low altitude areas. Proper precipitation is the basic condition for rice growth, but if there is too much precipitation, it may lead to problems such as soil water accumulation and excess water, which will have a negative effect on rice yield.
In summary, the upper limit of suitable planting altitude for indica rice is affected by a variety of factors, including geographical location, climatic conditions, seasonal changes, etc. Therefore, when growing indica, these factors need to be considered in combination to ensure the best yield and quality.
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