I. Sentences
1. In the field, when the rice was ripe, everyone bent over with laughter. From a distance, there is gold everywhere. They bow to you like gentlemen, and like shy little girls, they don't want to look up In the distant fields, golden rice is ripe, just like a golden ocean. The autumn wind is bleak, and the forest is dyed golden; Walking in this dense forest in the sun really has a unique flavor.
2. The autumn wind has passed and the grains are fragrant. That piece of farmland, from a distance, looks like a thousand waves rolling; Looking closely, the rice smiled and bent, the sorghum blushed and the corn was happy; The wind subverts the structure of rice and stirs up the complex of rice. I stepped on the youth of rice all the way and walked slowly in the eyes of rice.
3. A grain of rice is the shade rice gives to human beings; A grain of rice is warm and shiny; A grain of rice nourishes human body and soul; The ears of rice are arranged beautifully, especially when they are gathered in mountains or piled into the sea; At the moment when rice was ground into white rice, countless new lives really came into our lives.
Second, rice.
1. Rice refers to the common rice subspecies in the subgenus of common cultivated rice belonging to Gramineae botanically. Humans have identified 22 kinds of rice, but the only one used for bulk trade is ordinary rice. The shape and structure of rice grains are mainly composed of glume (rice husk) and caryopsis (brown rice).
2. China is one of the countries with the longest history of rice cultivation and the richest rice genetic resources. The specimens of ancient cultivated rice unearthed from Yuchanyan Site in Shouyan Town, Daoxian County, Hunan Province confirmed that China has a cultivation history of140,000 years, which is the known origin of cultivated rice in the world.
Third, the distribution range.
1. Rice is widely distributed in China. Rice is widely distributed in China, spanning five temperate zones: tropical zone, subtropical zone, warm temperate zone, middle temperate zone and cold temperate zone. Generally speaking, affected by latitude, temperature, monsoon, rainfall, altitude and topography, the distribution of rice planting areas in China is concentrated in the southeast and scattered in the northwest.
2. The vertical distribution pattern in southwest China gradually decreases from south to north; Rice growing areas are mainly in the south. Rice planting areas are mainly in the south, and the three major rice planting areas in the south account for 93.6% of the total sown area in China. There are obvious regional differences in rice planting areas, which can be divided into 9 sub-regions, of which the rice planting area in the Yangtze River basin has accounted for 65.7% of the country.
3. The three major rice-growing areas in the north account for about 6% of the national sown area, and their rice-growing areas span a lot, including seven obviously different rice-growing subregions; Most of the southern provinces are double-cropping rice, mainly planting hybrid indica rice and conventional rice, while most of the northern rice areas are planting single-cropping rice and japonica rice.