Extreme demand for heat (temperature and long-term) from tropical/subtropical origin plants:
The caloric demand (temperature and long-term) is the core constraint:
It's a very sensitive thing to the frost. Low temperatures below 0°c lead to the death of the sugar cane barber tissue, loss of juice and total loss of quality. In the north, warmer in the autumn and early in the early frost, sugar cane is often destroyed by the frost as it matures or as soon as it matures, leading to a loss of harvest or a severe reduction in production. This is the most direct and lethal reason why sugar cane cannot be cultivated in the north。
Water supply and steam demand:
Photons and photosynthesis:
Soil adaptation:
Pests and environmental coercion:
Here is a summary of the plant growth mystery:
The biological characteristics of origin and evolution: sugar cane originates in new guinea in the tropics and the surrounding islands, with long-term natural selection and artificial domestication, and its inherent biological and biochemical processes (e. G. Enzyme activity, photolytic pathways, hormone regulation, anti-cold genetic expression, etc.) are highly adapted to the high temperature, high humidity, long sunlight, and frostless environments. Its “living clock” and growth rhythms are designed for this environment. Energy metabolism and distributional rigid demand: the huge biomass of sugar cane (especially sugar-rich troughs) requires extremely high energy input (heat, light) and material base (water, mineral nutrition) to support its rapid growth and sugar accumulation. It is unable to complete the necessary energy accumulation and material transformation processes in a short-lived and short-lived environment with insufficient heat. The physical harm of hypothermia: low temperatures (especially frosts) can destroy the cell membrane structure of sugar cane, lead to enzyme failure, inhibition of light co-operation, water metabolic imbalance, etc., leading to cell and tissue death. Sugar cane lacks effective anti-cool mechanisms (e. G. Deep hibernation, anti-frozen protein, sugar protection, etc.) to counter the severe cold in the north. Economic and adaptive trade-offs: from an evolutionary or domestication perspective, plants prioritize their resources to the nature that best ensures their survival and reproduction in origin. Sugar cane does not have a strong winter-resistant choice pressure in the tropics/subtropicals, and is therefore extremely limited. Rarely grown in the north, even at significant cost (e. G. Greenhouse sheds), yields and quality are much lower than in the south and less economically efficient。
Conclusions
It is difficult to grow sugar cane in the north, and the most fundamental mystery lies in the irreconcilable contradiction between sugar cane as the “hot-demand gene” of tropical plants and the “inadequate calorie resources” in the north. This is reflected mainly in chronic acute underdevelopment, inadequate activity temperature and the deadly threat of frost. While water, soil and other factors are also limited, they are minor factors that can be partially overcome relative to heat. This limitation is determined by the biological characteristics of the long-term adaptation of sugar cane to the tropical environment and is the result of the evolution of plants in concert with the environment. While small-scale attempts can be made in local small climates or in protected areas (temperatures), large-scale commercial field cultivation is extremely difficult and uneconomical in most areas of the north。
