High-yielding Cultivation Techniques of Potato Interplanting Maize
Recently, the reporter learned from the Gansu Provincial Department of Agriculture and Animal Husbandry that Hui County, Weinan City, Gansu Province, after many years of trials and demonstrations, was experimenting with the promotion of the “mulching potato corn interplanting†cultivation model. The average yield per mu was about 2,500 yuan. The reporters sowed the technology. Key points interviewed Yang Xiaohui, director of the Gansu County Agricultural Technology Extension Center in Gansu, for the reference of farmers.
The land should be selected for deep, loose soil, good fertilizer and water conditions, and the former crop is suitable for the Sichuan plain of vegetables, corn and bean crops. Avoid continuous cropping. After harvesting, the former crops are ploughed twice in the autumn and winter and polished with the cultivator to achieve fine soil, flat surface, and good quality.
The soil preparation before fertilization needs fine soil preparation. According to the soil testing and formula fertilization, it is recommended to apply enough base fertilizer. Generally, the Mushi farmyard fertilizer is 4000-5000 kg, 25 kg of diammonium phosphate, 10 kg of urea, 40 kg of phosphate fertilizer, 10 kg of potassium sulfate, and zinc sulfate. 1-1.5 kg, applied one time, and buried 20-25 cm.
The selection of elite varieties of potato use dwarf, medium-early maturity, disease resistance and high yield of "Kexin II"; corn uses medium and late-maturing, disease-resistant and high-yielding Yuyu 22 and Tunyu 65 varieties.
About 20 days before seed processing, seed germination of seed germination, 125-150 kilograms of seed potato per acre, spray treatment with 3.5% of masticator or 2% morpholinium-ethanone WP 1000 times, Then put it on the sunny side of the sun to germinate. When the potato shoots grow at 1-1.5 centimeters, they are cut into 30-40 pieces per kilogram. When cutting, each piece must have 2 buds, combined with cuttings, dressing with plant ash, The seeds can be sown every other day, or they can be sown directly.
The mulched film mulching potato adopts high ridge mulching sowing and medium and small arch sheds as one of the planting methods. Before the sowing, the gullies were ridiculed in a north-south direction, the ridge width was 60 cm, the ridge spacing was 40 cm, and the ridge height was 10-15 cm. A 70 cm wide high quality mulch was used. The mulch film was tightly attached to the ridge surface and the film was compacted with soil.
Timely sowing in mid-late January, when the local temperature is stable at around 4°C, potatoes can be sowed. In mid-April, when the local temperature stabilized at 10-12°C, sowing maize.
Planting specifications Plant 2 rows of potatoes on a mulching ridge, with a spacing of 40 cm, a spacing of 30 cm, a depth of 10 cm, and a triangle digging. When placing the seed potatoes, put the potato shoots upwards, then cover the soil 3-5 cm, and finally set up a small shed. A row of corn was planted in the middle of a ditch with a 22-25 cm spacing and 3 corns per hole.
Field management Potato and corn should be checked for seedlings and supplemented seedlings in time to ensure seedlings are fully grown and Miaozhuang lays the foundation for high yield. Potato growth, custody and potato stage should be based on soil moisture and weather conditions timely irrigation, the entire growth period requires irrigation 3-4 times, budding and flowering period of plant growth requires a lot of nutrition, foliar can be sprayed potassium dihydrogen phosphate and trace fertilizer 1-2 times to supplement the late P, K fertilizer and trace elements, if the plant grows vigorously to hit the tip or spray 1-2 times per 100 ml per kilogram of polyazole, control on the promotion.
Timely harvest using this cultivation technology can bring the potato to market earlier. The potato can be harvested and marketed in late April, when corn is the critical period of growth, which can reduce its symbiotic period with corn. Corn is harvested in late August.
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