Ramie has a high utilization value in the fields of energy, chemicals, medicine and other fields. In recent years, castor oil products in the international market are in short supply. Ramie is warm, drought-tolerant, thin-minded and salt-tolerant. In general, the yield per hectare of 1/15 hectare (1 acre) can reach more than 200 kilograms, the output value is about 1200 yuan, and the planting efficiency is higher.
First, the soil fertilization ramie soil requirements are not strict, should be applied before sowing at the end of fertilizer, mainly farmyard manure, fertilizer supplement, every 1/15 hectares farmer manure 3000 kg, 20 kg of urea, 15 kg of diammonium phosphate.
Second, the selection of varieties of dry thin hills should be selected drought-resistant, barren thin, high oil yield of hybrids, such as Jinci 2 and 3, and so on.
Third, the appropriate period sowing north dry area in April to mid-match more appropriate sowing, soaking with warm water at 50 °C soaking for 24 hours, is conducive to early emergence of seedlings. The sowing method can be digging on demand or on-demand. In the case of moderate sensation, it is advisable to broadcast 5 cm deep, and then apply it after broadcast to prevent running. Thin and dry land with a spacing of 60 centimeters and a row spacing of 85 centimeters, 1.3 kilograms per 1/15 ha.
Fourth, field management
1. Proper close planting: After the emergence of castor, the seedlings should be checked and supplemented in time. The seedlings should be seedlings when they grow to 3 leaves, and they should be seedlings when they reach 5 leaves. There should be 1200 seedlings per 1/15 ha.
2. Pruning: Pruning can improve ventilation and light conditions in the field, which can increase the output of castor by 20% to 30%. The principle of pruning: good growth and development of plants should be based on prevention of prosperous, early earings, more earings, promote large ear; weak plants should promote growth, select the best flowering ear. When the ramie seedlings grow to 9 leaves, they are topping to promote the growth of first-order branches. When they reach 4 to 5 inflorescences, the branch growth points are removed. Leave 4-5 inflorescences per plant. Northern dryland areas should generally remove all plant growth sites in early August.
3. Cultivated soil: seedling cultivator 3 times, when the seedling height 20 to 30 cm when the weeding 1 times, hair tree 1 time, the last time to the base of the stem soil, to promote root growth, to prevent late lodging. The cultivator depth is 10 cm between rows and 5-6 cm beside the plants.
4. Fertilizer and water management: When there is a lack of waterlogging, it should be filled with water in a timely manner; During the fruit and fruit period, the demand for fertilizer and water increases, and fertilizer should be applied in a timely manner. Generally, every 1/15 hectares of topdressing stage will produce 10-15 kg of urea and 5 kg of potassium fertilizer.
5. Control pests and diseases: Nettle pests and diseases are lighter. Diseases mainly include blight, blight and leaf blight. Before sowing, 50% of compound carbendazim can be used. Add 500 times of diluted water and soak for 48 hours. Rinse with clean water and wait for sowing. After emergence, the diseased plants were found to be sprayed 3 to 5 times with 36% thiophanate oil emulsion 800 times, once every 7 to 8 days, and severe cases should be unplugged and burned in time. The main pests are ground tigers, cotton bollworms, beetles, etc. When pests are found, Tao Xiaoling can use once-dailess cream of 1000 times for drug control.
Fifth, timely harvesting of ramie fruit is inconsistent, and premature harvesting of seeds is not good; harvesting will cause shattering. The criteria for harvesting should be that the peel in the lower part of the ear begins to turn brown, and the fruit is sunken and cracked. Harvested once every 7 to 8 days. After harvesting, the pods were stacked for 2 to 3 days and then dried to thresh.
First, the soil fertilization ramie soil requirements are not strict, should be applied before sowing at the end of fertilizer, mainly farmyard manure, fertilizer supplement, every 1/15 hectares farmer manure 3000 kg, 20 kg of urea, 15 kg of diammonium phosphate.
Second, the selection of varieties of dry thin hills should be selected drought-resistant, barren thin, high oil yield of hybrids, such as Jinci 2 and 3, and so on.
Third, the appropriate period sowing north dry area in April to mid-match more appropriate sowing, soaking with warm water at 50 °C soaking for 24 hours, is conducive to early emergence of seedlings. The sowing method can be digging on demand or on-demand. In the case of moderate sensation, it is advisable to broadcast 5 cm deep, and then apply it after broadcast to prevent running. Thin and dry land with a spacing of 60 centimeters and a row spacing of 85 centimeters, 1.3 kilograms per 1/15 ha.
Fourth, field management
1. Proper close planting: After the emergence of castor, the seedlings should be checked and supplemented in time. The seedlings should be seedlings when they grow to 3 leaves, and they should be seedlings when they reach 5 leaves. There should be 1200 seedlings per 1/15 ha.
2. Pruning: Pruning can improve ventilation and light conditions in the field, which can increase the output of castor by 20% to 30%. The principle of pruning: good growth and development of plants should be based on prevention of prosperous, early earings, more earings, promote large ear; weak plants should promote growth, select the best flowering ear. When the ramie seedlings grow to 9 leaves, they are topping to promote the growth of first-order branches. When they reach 4 to 5 inflorescences, the branch growth points are removed. Leave 4-5 inflorescences per plant. Northern dryland areas should generally remove all plant growth sites in early August.
3. Cultivated soil: seedling cultivator 3 times, when the seedling height 20 to 30 cm when the weeding 1 times, hair tree 1 time, the last time to the base of the stem soil, to promote root growth, to prevent late lodging. The cultivator depth is 10 cm between rows and 5-6 cm beside the plants.
4. Fertilizer and water management: When there is a lack of waterlogging, it should be filled with water in a timely manner; During the fruit and fruit period, the demand for fertilizer and water increases, and fertilizer should be applied in a timely manner. Generally, every 1/15 hectares of topdressing stage will produce 10-15 kg of urea and 5 kg of potassium fertilizer.
5. Control pests and diseases: Nettle pests and diseases are lighter. Diseases mainly include blight, blight and leaf blight. Before sowing, 50% of compound carbendazim can be used. Add 500 times of diluted water and soak for 48 hours. Rinse with clean water and wait for sowing. After emergence, the diseased plants were found to be sprayed 3 to 5 times with 36% thiophanate oil emulsion 800 times, once every 7 to 8 days, and severe cases should be unplugged and burned in time. The main pests are ground tigers, cotton bollworms, beetles, etc. When pests are found, Tao Xiaoling can use once-dailess cream of 1000 times for drug control.
Fifth, timely harvesting of ramie fruit is inconsistent, and premature harvesting of seeds is not good; harvesting will cause shattering. The criteria for harvesting should be that the peel in the lower part of the ear begins to turn brown, and the fruit is sunken and cracked. Harvested once every 7 to 8 days. After harvesting, the pods were stacked for 2 to 3 days and then dried to thresh.
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