High cost. The cost of planting anti-seasonal vegetables is very high, first of all, you need a greenhouse, and then you have to pay attention to its temperature every day. Anyway, the cost is not proportional to the harvest.
Now in winter, whether in the northern region, or in the southern region of the vegetable market can still buy fresh peppers, squash, tomatoes, beans and other fresh vegetables in the winter is unlikely to buy. Fresh and tender leafy vegetables can be purchased in the summer and fall. This is what anti-seasonal vegetables are all about, and anti-seasonal vegetables are one of the most important ways to ensure the availability of vegetables throughout the year.
Anti-seasonal vegetables are in the general area due to factors such as heat and other restrictions and can not be all the normal planting of the season, such as summer most areas with high temperatures, high environmental humidity, limited to the healthy growth and development of vegetables. In winter, the temperature is so cold that there is no way for vegetables to grow and develop in open field cultivation. Vegetables are produced using unique environments and resources such as high altitudes and low temperatures in the summer and high temperatures in the winter, or using defensive equipment. Compared with all normal seasonal vegetable production, the planting and sale period of anti-seasonal vegetables is earlier or later than all normal growth period and supply period, so as to achieve the purpose of anniversary production and balanced supply.
Anti-seasonal vegetable planting is the use of vegetable greenhouses, greenhouses and other equipment in the spring and winter temperatures low season planting vegetables or in subtropical areas such as Hainan, Yunnan Xishuangbanna and other areas of sweet temperature planting vegetables. In the summer and fall season to use the plateau region area unique "pure natural central air conditioning" of the topography of the climate advantages of planting low-temperature resistant, half low-temperature resistant and heat-loving vegetables. The Sichuan Basin is a key production area for summer and fall vegetables in China. This area has a soft climate, no cold in winter, no heat in summer, with "pure natural central air-conditioning" topographical and climatic advantages. June to November is the off-peak season for vegetable production and manufacturing, and many areas with high temperatures are unsuitable for the production and manufacturing of vegetables, while in the Sichuan Basin, the climatic conditions are suitable for the growth and development of vegetables. In the Sichuan basin, the climate conditions are suitable for the growth and development of vegetables, which can plant the vegetables that are afraid of high temperature that cannot be planted in the Pingchuan area due to high temperature.
The price of anti-seasonal vegetables is very high, but why do farmers want to plant very little?One is the sales market price of anti-seasonal vegetables, although higher, but the price of vegetables in the field is very low, vegetable recyclers are generally cut price recovery, such as the village planted in the anti-seasonal vegetables lotus white, a catty of the purchase price is 0.15 yuan above and below the market price of the vegetable sales market is more than 1 yuan, the field vegetable purchase price and the non-anti-seasonal vegetables similar to the market price, there is nothing advantageous to talk about, and thus the farmers planting work incentive is not. Farmers planting work enthusiasm is not high.
The second is in China's Yangtze River northward in many areas, the winter temperature is below 0 ℃, some areas and even in -40 ℃, most of the areas can not carry out open field, only the use of greenhouse greenhouse planting. However, the greenhouse greenhouse capital cost is high, planting management method of high technical standards, the general farmers in the political commitment, in the planting management method lack of greenhouse greenhouse planting management method of technical, afraid of the capital investment, despite the high price of vegetables in winter, especially in the northern region area, but because of these two elements, most farmers are not willing to plant.