It starts from Dongtai County(large black plastic flower pots), Jiangsu Province, with a latitude of 33 ° north, along the Huaihe River, through Anhui and Henan, and then into Shaanxi, and then along the Qinling Mountains to Gansu Province. Since the 1970s, central and southern Hebei province, high-yield, corn has developed rapidly(plastic containers for plants wholesale), correspondingly reducing part of the cultivation area of millet, millet, sorghum and soybean.
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This area includes all of Shandong and Henan provinces in the middle and lower reaches of the Yellow River(polypropylene plant pots), Huaihe, and Haihe river basins, southern and central Shanxi province, Guanzhong district in central Shaanxi province, and Xucui district in northern Jiangsu and Anhui provinces(11.43cm square nursery pots). 7-10 days before the wheat harvest, and multi-crop coexist, intercropping the corn with the planter according to the requirements and rows.(plastic starter trays wholesale price philippines)
Corn has a certain degree of drought tolerance, and the growth period of early, middle and late maturing varieties of corn in China is about 80 to 150 days(plastic growing containers). The intercropping method of corn and soybean accounts for about 40% of the total area of corn in this area, of which the northeast Jilin in the region is the most, accounting for about 50 to 60%(1 gallon pots distributor); natural conditions are also very suitable for the growth and development of corn.
(plastic starter trays wholesale price philippines)The area is flat, there are fewer people and more land, but the level of agricultural mechanization is relatively high(1 gallon plastic flower pots). It is the largest concentrated production area of corn in China, with a corn planting area of 130 million mu, accounting for more than 40% of the total corn area of the country(5 gallon nursery pots wholesale), and the total output accounting for about 50% of the national corn output. The main types of interplanting are the following.
For example, the yield of corn in eastern Shandong province(11 inch plastic plant pots), central Hebei province and northern Henan province is higher, but about three-thirds More than two corns are still in the middle and low yield levels. There are various ways of planting corn, and inter-, inter-, of which wheat and corn intercropping account for more than 70%(1 gallon nursery pots wholesale). In the 1950s, two crops of wheat and corn were planted in the Huanghuaihai Plain area.
(plastic starter trays wholesale price philippines)This area is a two-crop area a year(7 inch plastic flower pots). In order to ensure the high yield and stable harvest of wheat and corn, especially in the absence of early-maturing, and highly resistant corn varieties, it will limit the development of its area. According to the analysis of the heat resources in the Huanghuaihai Plain, from harvesting wheat to planting corn and then growing wheat in time(10 gallon nursery pots wholesale), it usually takes only 90 to 110 days from north to south.
Generally intercropping wheat and corn in two crops in this area accounts for a large proportion(5 inch succulent pot). If the agricultural consumption is deducted again, the accumulated temperature required for planting summer corn is significantly reduced. The density of wheat and corn is the same as that of flat seeding, and farming is more prosperous(3 gallon nursery pots wholesale), while the middle and late maturing varieties with longer growth periods are used for corn.
The first one is flat sowing. It is also known as the three-density one-sparse or four-density one-sparse planting method(3 inch square pots), which is currently the most widely distributed and largest in the southern part of the Huanghuaihai Plain. For example, this method is adopted in southern Shandong province, south of Shijiazhuang area in Hebei province(7 gallon nursery pots wholesale), northern Henan province, and Guanzhong plain area in Shaanxi province.(plastic starter trays wholesale price philippines)