Advantages, cultivation methods and matters needing attention of Tainan 4, a new soybean green manure variety

Tainan 4, a new green manure soybean variety, do you know the advantages, cultivation methods and matters needing attention of this soybean? Want to know something about it? Let's take a look at it together.

The advantages of the variety

First, the amount of seeds per unit area of green manure cultivation is saved: Tainan No. 4 has small full seeds, the weight of 100 seeds is about 610g, and the sowing amount per hectare is only 25030kg, which is half less than that of ordinary soybean seeds, and the cultivation is labor-saving and easy to manage.

Second, it has a long growth period and great adaptability to the cultivation environment: it belongs to a late-maturing variety, adapts to the high temperature and humid environment, has luxuriant stems and leaves during the growth period, maintains field mulching time for 4 to 5 months, has a great inhibitory effect on weeds, and the field coverage rate is complete. Not only the fresh grass yield of the plant is high ​​, but also the fertilizer content of the plant is high.

Third, Tainan No. 4 has a wide range of uses: green cutting can be used as fodder, turned into the soil can be used as green manure, seed is rich in protein and oil, high nutritional value, and the variety is non-genetic improvement, it is the best nutrition for human health, and it can be used for green bean sprouts, soybean milk, tofu and seasoned instant powder.

Fourth, it is suitable for autumn seed harvest in Tainan: Tainan No. 4 is harvested in autumn in Tainan County. The yield of artificial harvest per hectare can reach 2200,2800 kg, and the reproduction rate is about 70 times. Tainan No. 4 has an erect stem higher than Huwei green pea, and the lowest pod position is more than 10 cm above the ground, which is suitable for mechanical harvesting.

Cultivation methods and matters needing attention

First, the promotion area: Tainan No. 4 is suitable for Yunjiannan area, Changhua, Miaoli, Ilan, Hualien, Gaoping area, Taitung Phase I and II for green manure cultivation and autumn planting in Tainan County.

Second, the suitable cultivation period: for the purpose of green manure cultivation, the sowing time can be planted from early February to August, and for the purpose of seed collection, it is suitable for planting from mid-August to late September.

Third, cultivation density: green manure cultivation, picking and sowing seed quantity is about 30 kg per hectare, if mechanical strip sowing is used, row spacing is 50 cm, seed quantity is 20: 25 kg per hectare, autumn seed is harvested, soil preparation machinery is adopted, seed quantity is 25 kg per hectare, row spacing is 50 cm.

Fourth, fertilizer application: no fertilizer is applied in green manure cultivation; for seed production, the amount of nitrogen fertilizer per hectare is 30,40kg, phosphoric anhydride 90kg and potassium oxide 60kg.

Fifth, the sowing methods of green manure are divided into dry field cultivation and paddy field cultivation:

1. Dry field type green manure cultivation: after the previous harvest, the soil is prepared, the seeds are evenly sown in the field, and then ploughed and covered with soil, the thickness of the covering soil should not be too deep about 2-5 cm, or directly use machinery for border sowing, or not for border direct seeding.

two。 Paddy field type green manure cultivation: the seeds are evenly sown one day before rice harvest, and the next day rice is harvested at the same time, rice artemisia is finely cut and covered with seeds by a harvester, which can save the cost of land preparation during the rainy season, paddy fields should strengthen drainage to benefit the growth of green manure soybeans.

6. Other points for attention in managing operations:

1. The seed germination rate must reach more than 90%. If the germination rate standard is not reached, the seed sowing rate should be increased to ensure the seed germination rate so as to achieve the effect of early mulching.

two。 The soil should be kept moist during sowing, but it is not suitable for stagnant water in order to improve the seed unearthing rate and seedling growth potential. The seed should be evenly distributed, and the farmland can be divided into several plots and then sown quantitative seeds, which can improve the uniformity of unearthed soil and increase the effect of field mulching. Inhibit the breeding of weeds.

3. The seed of Tainan No. 4 is small, and the soil cover should not be too deep after sowing, so as to avoid great resistance to the emergence of young embryo stems and cotyledons and affect the germination rate. the ideal depth of soil cover is 2cm and 5cm.

4. In order to reduce the occurrence of insect pests, it is safe to cultivate in a large area in the planting group. in addition, insect pheromones are hung during the planting period to kill night burglar insects and beet armyworm adults with 5-10 branches of pheromones per hectare. If the growth period of green manure is more than 80 days, if the pest in the field is serious, insecticides should be applied timely to control it, which is more effective for green manure cultivation or seed production.

5. The application of green manure can be cultivated or buried without ploughing, and it is better to apply it more than 15-20 days before sowing after the burying period.