Like cold and wet, cold, suitable for planting in high, cold mountains at altitudes of 2,700-3200 metres. Plantation was doubled twice, the last time it was turned over, the fertilizer was buried in the soil, and a batch of seedlings were collected between mid-may and early june. In the case of a pull-dig pool transplant, the seedlings must display a soil watch and water the fixed water. After planting, water is duly poured in the mornings on the mornings of the sun, fertilized two to three times according to the saplings, with attention to pest control, which can be harvested from late november to early december。
I. The growth habits of marka
1. The unique growth conditions of maka, which are very harsh and suitable only for cold areas of the highlands, with temperatures above 30°c, abundant rainfall and freshwater lakes surrounding it, limit cultivation。
In addition, due to the very strong “absorption force” of soil nutrients, the land requires seven years of rest per harvest season. The andean mountains of south america and the yulong snow mountains of the yunnan river in china are the most developed areas that meet these strict conditions。
Between 7 and 9 months after the planting of makkah, plants can grow to 12 to 20 centimetres and grow in a few months, and produce in a month and a half after flowering, with only one year to complete their life cycle when appropriate。
Ii. Marka's responsibilities
1. Slender beds: backwind, sunlight, slow terrain, easy irrigation, low groundwater table, deep and loose ground, sand or light soil that has not grown cross-flower crops in the last three years, with soil ph of 6. 5 ~ 7. 5 more favourable。
2 in the field: before march, tanned, soil shredded, weeds and stones removed from the fields, and lastly, 22. 5-30 tons of rotting farm fertilizer per hectare, 1,500 kg of phosphorus fertilizer, ploughshares, 1 metre wide and 5-8 metres long for flat fields。
3 seeds: maka ying chose to enrich the radiant seeds, soak them 24 hours before planting with warm water of 25-30°c, impregnate them with 300 times the flimlin for 15 minutes, wash them with clean water and mix them with dry water。
Seeding: in mid-march, windless, clear noon was chosen, before seeding, the bottom water was poured in the bed, the seed was spread evenly after immersion, covering 0. 5 centimetres of breeding soil, then re-stamped in the bed, covering the black sunnet。
5. Shrimp period: normally 5-10 days, 15-20 days, 70-80 per cent immediate removal of pine needles, wetting of beds and preventing seeding. After a month of growth, the seedlings are removed from the sunnets for open seedlings。
Iii. Maka's transfer technology
1. Land selection: makkas prefers cold and wet weather, is cold and adaptable, and is suitable for planting in high, cold mountains at altitudes of 2,700-3200 m. Avoiding high temperatures and wet-lying water, preferably in the absence of cross-flower crops for many years。
2. Land cover: makka tilled twice, used 37. 5 to 45 tons of decomposed and high-quality farm fertilizer per hectare before the last tillage, average calcium 75 to 1,500 kg as base fertilizer spread over the surface, tilled the ground when the tillage fell, and then razed to the ground, with a 2-metre wide ditch to be planted。
3. Plantation: in mid-may to the first half of june, 7-10 leafs were taken in batches. 1 plant per pond, with a 20 x 20 cm range, with 15-180,000 plants per hectare. At the time of planting, the seedlings must display their soil surfaces and water the fixed water。
4 water fattening: after the planting of makadi, water is duly poured out in the middle of the morning. According to the sapling rate, 2-3 times per hectare, 150-225 kg per hectare combined fertilizer, 3-4 times per year, and artificially removing weeds from the fields。
5 insects: maka is very resistant to disease, is generally free from disease during cultivation, and the pests are mainly aphids, which can be sprayed with 120-150 g of humid powder per hectare of 120-600 kg。
6 harvest: from late november to early december, many of maka's leaves were yellowened, the roots of the flesh were fully bloated, and the bluntness of the base was harvestable. After harvesting, the leaves are removed, the soil and stubbles are removed, water is washed, sliced to dry and become commodities。
