Anti-season cultivation techniques of taro?

1. 1 Soil Requirements The taro field should be a field with deep and fertile soil layer, rich organic matter, soft soil and convenient irrigation and drainage, or a soil-cultivating area with rich organic matter, and rice is the best. After the late rice is harvested, 1 65438+1plowing in sunny days around mid-October, according to the width of the border (including ditches)1? 5~ 1? 6m, dig deep into the soil and ditch to ensure that there is no water after heavy rain. Sunbathing 1 ~ 2 weeks makes the soil loose and breathable. ?

1.2 sowing 165438+ 10. Starting from the end of October, the soil preparation and base fertilizer were selected and sown one after another, and sowing was basically completed at the end of 65438+February. 667m？ 2 row spacing is 75 ~ 80 cm, plant spacing is 40 ~ 45 cm, 667m? 2 sowing 1800 ~ 2200 plants. When sowing taro seeds, it is better to place them at an angle of about 80. After taro seeds are put away, cover them with 8 ~ 10 cm soil, then cover them with manure or garbage and other organic fertilizers, and then cover them with 40cm plastic film, which can not only prevent freezing but also promote early emergence. Taro seeds should be randomly dug out and selected in the reserved seed field, with uniform size, weight of 40 ~ 50g, stout terminal buds, no rotten holes and no pests. ?

65438+ 0.3 basal fertilizer per 667m? 2. Apply 35-50kg of high-quality potassium sulfate compound fertilizer and 50kg of phosphate fertilizer (calcium superphosphate, etc.). ), 1kg 90% trichlorfon crystal (used to control underground pests), 1 ~ 1 borax, etc. 5 kg, livestock manure or manure, garbage and other organic fertilizers 4000 ~ 5000 kg. Compound fertilizer, borax, trichlorfon, etc. It is applied in two times. At the distance of 0/0 ~15 cm from taro, phosphate fertilizer and taro are put together, and organic fertilizers such as column fertilizer are covered on the covered taro rows. ?

2 Early management promotes early development?

2. When the temperature is below1antifreeze and seedling protection -7℃, check the temperature of taro, and cover it with straw for antifreeze if necessary. After mid-February, taro buds began to germinate and emerge. It is necessary to check the broken film of the emergence to ensure the whole seedling. ?

2.2 Diseases, pests and weeds were controlled twice, and the first 1 time was when sowing. The second time was mainly used to control pests such as taro. After ridging 10 days, use 40% dimethoate or triazophos, trichlorfon crystals and other drugs. Every 667m? 2 medication 0? 5 ~ 1 kg, combined with topdressing, [kg * 4] every 50kg of water, add 40% dimethoate (or triazophos) 100 ~ 120 ml or 667m ~ 80 g trichlorfon crystal (only 1 species is optional), and pour. 2 using triazophos 0 again? 5 kg, mixed with 25 0 ~ 300 kg of water, applied around the roots of taro plants for control. If diseases and insect pests occur in taro leaves, dichlorvos or trichlorfon can be used to control them, and the concentration is about 1000 times. Weeding is mainly carried out in three times. At 1 time, when the bud peak of taro seedling is slightly exposed, glyphosate (about 15kg) and a little neutral washing powder are added to each barrel of 150 ~ 180 ml water to increase the weeding effect. The second time, about 8 ~ 10 days before soil cultivation, the same medicine was used to weed again. Don't spray weeds on taro stems and growing points this time. The third time, after several rainfalls, when the height of weeds is about 10cm, the mixed solution of glyphosate and butachlor or herbicide Dan is sprayed on the soil surface of taro ridge, and 50 ml of 60% butachlor and 50 ml of glyphosate180 ml of glyphosate/kloc-0 are added into each barrel of water. We will deal with it according to the situation of grass in the future. ?

2.3 timely topdressing for 3 times, after the leaves of taro seedlings are fully exposed for the first time, loosen the soil 1 time in sunny days, every 66 7m? 2. Use 8kg urea and pour it with water. 10 ~ 15 days later for the second time, every 667m? 2. Apply urea 10 ~ 13 kg and potassium sulfate 10 kg, and pour them thoroughly with water or spread them out twice. If you have labor, cut some fresh firewood and put it on the taro row to increase organic matter and loosen the soil. The more the quantity, the better. The third time is about the middle and late April, when ploughing, every 667m? 2. Pour or sprinkle 30 ~ 40kg of high-quality ternary compound fertilizer, 20kg of urea and 20kg of sulfur and potassium fertilizer on the row spacing of taro (spreading should not touch the base of taro stem). ?

2.4 Ridge irrigation Ridge should be started in the middle and late April, with a ridge height of 35 ~ 40 cm. The soil on the back of the ridge should be compacted, and the soil should not slip. The taro ditch should be connected with the ditch to facilitate irrigation and drainage. After the soil is cultivated, the taro field should be irrigated. In cloudy days, it can be irrigated after 3 ~ 5 days, preferably after moderate rain, and the taro ridge soil is fixed. The ditch water is kept at 25~ 30cm to meet the needs of rapid growth of taro. If possible, it is best to cover the taro ridge with firewood. The water in the ditch of taro field will be drained at the end of June, about 7 days before taro goes on the market. Taro will be listed in batches and drained in batches to prevent drought from affecting yield. From before beginning of autumn 1 week, the water in taro field ditch can be drained to avoid affecting the quality. ?

2.5 When the main taro stalk grows to 1, control the overgrowth and remove the whipping. At 5m, control the growth with drugs, and add paclobutrazol 1 bag (20g/ bag) made in Hangzhou and Yixing or 2 bags of Bijiu (10g/ bag) to each barrel of water. Removing the sprouted stems of taro usually takes half a month. Combined with weeding in taro field, glyphosate and herbicide (or butachlor) were mixed and sprayed on the surface of taro ridge. Herbicide can inhibit the germination of stems. Add 150mL glyphosate and 50 ~ 80 ml herbicide to each barrel of water. ?

3 Reasonable arrangement of harvest? 「JP3」

The special harvest period of taro begins in late June and lasts until February to March of the following year. The so-called reasonable arrangement, on the one hand, should be sold according to the market volume, on the other hand, if this crop is not planted, leave the taro in the ground to continue growing, and don't collect it at home. Delayed harvesting can not only improve the quality, but also increase the yield, saving labor and keeping fresh.