What are the planting techniques of Ophiopogon japonicus? Do a good job of these five points can be high yield!

Radix opnot only has high medicinal value, but also has high greening value, so it has become a kind of efficient economic crop planted by farmers. Then, what were Mai Dong's cultivation techniques? Do well these five points can be highly productive!

1. Soil preparation and fertilization

It has special requirements for soil conditions, suitable for loose soil, fertile wet, good drainage of slightly alkaline sandy loam. Before planting, the soil must be deeply ploughed, and 1000 kg of decomposed fertilizer or manure and 50 kg of calcium superphosphate shall be applied per mu in combination with soil preparation. Before planting, plough again, level and rake fine, make a flat bed 1.3 meters wide, the furrow width is 40 cm, and the drainage ditch is opened all around.

2. Planting

Combine harvest lilyturf tuber with harvest and seed. Select sunny evening or cloudy day planting, in the whole good ridge surface, according to the row spacing 15-20 cm horizontal ditch, deep about 5 cm, according to the plant spacing 8-10 cm planting 3 seedlings. It cannot be planted too deep or too shallow. Too deep, difficult to sprout, and easy to produce high-foot seedlings, low yield; too shallow, exposed roots outside, easy to die or lodging, affecting survival rate. Plant seedlings vertically close to the ditch wall, so that the roots are vertical and must not bend, otherwise it is not easy to root by the ditch wall. After planting, cover the soil and compact, so that the roots are closely connected with the soil, and then use both feet to clamp the seedlings and step on them, so that the seedlings stand upright and stable. Immediately after planting, pour 1 time of root fixing water to facilitate early new roots.

3. Management

(1) Intertillage and weeding

After planting about 15 days green, found dead seedlings removed in time, choose cloudy days or evening re-planting. 15 days after planting to loosen the soil weeding once, after the election of sunny days every 1 month or half a month weeding once to promote early tillering seedlings, more roots. After October, it is advisable to loosen the soil shallowly and not to hurt the fibrous roots. The dwarf dwarf lilyturf tuber plants should be weedless in the field to avoid grass shortage.

(2) Topdressing

The key to yield increase is to apply nitrogen, phosphorus and potassium fertilizer rationally. In general, topdressing is applied three times a year. The first time is in July, 2500kg of human and livestock manure water and 50kg of decomposed cake fertilizer are applied per mu; the second time is in early August, 3000kg of livestock manure water, 80kg of decomposed cake fertilizer and 150kg of stove ash are applied per mu; the third time is in early November, 3000kg of livestock manure water, 50kg of cake fertilizer and 50kg of calcium superphosphate are applied per mu to promote root growth and hypertrophy.

3) Watering

The water requirement of Ophiophora tuber is large during its growth period. After summer, the temperature rises and the evaporation increases, so irrigation should be timely. In case of drought in winter and spring, irrigate 1-2 times before the beginning of spring to promote the growth and development of root tuber.

4. Pest control

(1) Black spot disease

Control method: select healthy disease-free plants as seed plants, soak them in 1:1:100 Bordeaux mixture for 5 minutes before planting; remove accumulated water in time in rainy season to reduce field humidity; sprinkle 100 kg of plant ash per mu in the early stage of disease when dew is not dry in the morning; spray 1:1:100 Bordeaux mixture or 65% Zineb 500 times solution once every 10 days for 3-4 consecutive times during disease onset.

(2) Root knot nematode

Control method: rotation of seeds and gramineous crops, no sweet potato, beans, potatoes and other root vegetables for previous crops or intercrops; combined with soil preparation, apply 20% methyl isophos emulsion or 5% granules 250- 300g per mu to make toxic soil and sprinkle it in furrows, turn it into soil, and control nematodes.

(3) White grubs

It occurs in August and September, and can be sprayed with 90% trichlorfon 200 times solution.

5. Harvest

Ophiophora tuber is harvested in the middle of April of the second or third year after planting. Select sunny day to plow soil 25 cm, turn out Radix op, shake off soil, cut off root tuber and fibrous root, put them into basket respectively, put them in running water and rub them with feet to wash away sediment. Spread the cleaned radix opon the sun mat or sun field, dry and then gently rub with hands, and then out of the sun, repeat this several times until the fibrous roots are rubbed off, and sift out impurities with a sieve. Generally, it can yield about 150 kg per mu of dry dwarf lilyturf, and reach 250 kg at high yield. It is better to have large and long grains, prismatic shapes, yellow and white flesh.

In addition, it should be noted that Ophiophora japonica likes warm and humid climate conditions, abundant rainfall 5-30℃ can grow normally, the optimum growth temperature 15-25℃, below 0℃ or above 35℃ growth stops, the growth process requires a large amount of water, requires sufficient light, especially in the root swelling period, sufficient light can promote the root swelling.