1. Spring potato: Choose Feirui, Dutch potato, medium potato or other detoxified potato. Applying 2000-2500 kg of organic fertilizer per acre and 50 kg of 45% potassium sulfate compound fertilizer, the whole land is made of sorghum and the sorghum is 4 meters wide. Sowing around February 20, each line is 8 lines, the hole distance is 20 cm, and about 6,000 holes per acre. Cover the film to increase temperature after sowing. After emergence, the seedlings were ruptured in the middle and late March. Before the bud, according to the growth of the plant, the early application of topdressing, 10 cm deep from the plant 10 cm deep caverns, 7.5-10 kg per mu, while spraying 1% urea solution and 0.5% potassium dihydrogen phosphate solution. At the flowering stage, attention should be paid to the control of diseases and insect pests such as late blight and aphids. Spring potatoes are harvested in late May.
2, fresh spring corn: use Zheng Hei No. 1, Zheng Baiyu No. 6, special sweet No. 1, Hu Yuxi and other varieties. From the end of March to the beginning of April, a row of spring corn was planted in the spring potato ditch, the seeding depth was 3 cm, and about 1800 seedlings per mu. Cover the fine soil after sowing. From the end of April to mid-May, due to the early application of fertilizer and ear fertilizer, the corn glutinous rice and fresh spring corn were harvested at the beginning of August in the big bell mouth with low-toxic and low-residue pesticides.
3. Summer corn: Choose Zhengdan 958 with compact plant type. After the harvest of the spring potato at the end of May, two rows of summer corn were planted in the middle of the sorghum. The spacing between the two rows of summer corn was 50 cm, the spacing between summer corn and spring corn was 1.75 m, and about 2500 seedlings per acre. 40-50 kg of corn special fertilizer per mu before sowing, and 15-20 kg of urea per acre at the jointing and booting stage. Focus on prevention and control of corn spot disease, small spot disease, sheath blight and corn borer diseases and insect pests. Summer corn is harvested from the end of September to the beginning of October.
4, autumn potato: select Dongnong 303, Chinese potato series and other varieties. 20 days before sowing, put the seed potatoes in a cool, damp, ventilated and sheltered room, and lay a layer of 5 cm thick wet sand on the ground, draining the seed potatoes, and then cover the wet sand with the potato chips. A layer of seed potato is discharged between the layers of sand, and a total of 2-3 layers are discharged. The top layer is covered with a layer of wet straw to keep the potato pile at a lower temperature and a certain humidity until the seed potato germinates. From mid-late August to early September, 8 rows of corn were planted between the corn rows, and 5500-6000 holes were planted per acre. Before the sowing, apply 2000-2500 kg of organic fertilizer per acre, 40-50 kg of ternary compound fertilizer; apply 10 kg of urea per mu after the seedling; look at the seedlings to make the tuber and expand the fertilizer, mainly with potassium fertilizer; after the plant is sealed, the roots are outside the roots. top dressing. After sowing, the surface is covered with straw or wheat straw, and the shade net can be covered conditionally. After emergence, combined with fertilization, weeding, soil removal, and clearing ditch. The main disease of autumn potato is late blight, which can be sprayed with 64% anti-virus 矾 500 times before the plant is sealed, sprayed once every 7 days, and continuously controlled 2-3 times. Autumn potatoes were harvested in early November.
5, spinach: the selection of varieties with strong cold resistance. The autumn potato is rushed to broadcast spinach in time. The following year, the harvest was continued in February.
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