In order to make full use of the winter mulberry garden free time and increase the mulberry farm income, according to the potato fertility characteristics and in recent years in the winter mulberry garden covered with potato straw cultivation techniques test demonstrations, received good results, now the relevant technical summary As follows, for reference:
First, the choice of mulberry fields
1. It is necessary to choose sandy lands with flat terrain, fertile soil, fertile soil, and deep soil layers. It is not appropriate to use dead water or muddy fields that are difficult to drain.
2, to choose mulberry planting more than two years, the use of wide and narrow rows of mulberry planting, large row spacing in the 6-8 foot, small row spacing of 1.8-2 feet, in order to operate management.
Second, the mulberry field finishing
It is required to clean up the weeds in the mulberry fields from late November to early December, and plow deep into the mulberry fields. In mid-December, we will grind and grind the land and dig planting trenches. The ditch is 15-20 centimeters deep and 50-60 centimeters wide. At the same time clean up the drains around to drain.
Third, choose a good seed
The medium- and early-maturing varieties were selected, and the whole growth period was 90-110 days, such as: Zhongshu No.2, Bashu No.10, No.2, Zhongdian Red. It is advisable to ensure mature harvest at the end of April in order to improve the economic benefits of the morning market and ensure that it does not affect the growth of mulberry trees.
Fourth, seed processing
Seed treatment must be done before planting. Seed potatoes should be selected for disease-free, non-destructive, smooth skin, seed potatoes weighing 25-30 grams, the best sowing of whole potatoes, disease prevention and infection, when cutting large potatoes, must cut Put the knife in 5% lime water and soak for 10 minutes to sterilize it to prevent infectious disease. Seed cuttings can be sown with plant ash and dried after drying. At the same time, each piece must be guaranteed to have 2-3 full shoots. should.
Fifth, timely sowing, reasonable close planting
The sowing time is required to be completed by the end of December. The sowing volume per acre is 50-60 kg. Two rows of seed potatoes are placed in the planting trough with a spacing of 30-35 cm and a spacing of 15-20 cm. The seed potatoes are placed in the air to ensure 3500-4000 plants per mu.
Sixth, apply base fertilizer
The base fertilizer is 1500-2000 kg of organic fertilizer per mu, and the ternary compound fertilizer is 40 kg plus 5-10 kg of urea. Application method: After covering with farmhouse fertilizer, chemical fertilizers are applied between rows (fertilizer and seed potatoes cannot be contacted to prevent bad seeds from affecting emergence). During the expansion of tubers, potassium dihydrogen phosphate (ammonia) 1 kg/ha foliar spray was used to promote the expansion of tubers.
Seventh, straw cover
After the pendulum fertilizer is applied, it is necessary to timely cover the straw. The thickness of the cover grass should be about 10 cm, and the heat preservation and moisturizing should promote the seedlings to grow and emerge neatly and neatly. The straw can't be disturbed in the end to end so as not to affect the seedling emergence. Straw cover the surface of the car should not be too thick book, too thick so that the seedlings are not easy to stick out of the grass surface and the formation of slender legs slim seedlings, too thin leak caused by the formation of sweet potatoes, affecting the quality of goods and quality. After the grass is covered, a thin layer of fine soil is pressed onto the straw to suppress the wind and scratch the straw and livestock.
Eight, field management
1. Water Management: In case of dry weather after sowing, it is necessary to water the rice in time to keep it compact and promote early emergence. Tuber potato expansion in case of drought should be timely watering drought, in the event of rainy time in addition to removing stains, prevent dead seedlings.
2, Fertilization: Seedlings after emergence, depending on the situation with 5 kg of urea per acre with water or human urine, methane liquid raising, tuber expansion period can be sprayed 0.5% potassium dihydrogen phosphate.
3. Chemical regulation is an effective measure to promote high potato yield. Potatoes were sprayed with 100 ppm paclobutrazol once during the initial bud period to promote the rapid transfer of growth centers to tuber enlargement.
9. Timely harvested rice straw covers the whole cultivation of the potato. After a prolonged period of sun and rain, the rice straw rots from the bottom up. When the potato stems and leaves start to yellow at the end of April, they can be harvested by hand. Block can, rotten grass residue turned into the mud fertility, increase soil organic matter.
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