Since 2000, the province has taken the lead in introducing this technology. At present, it has applied and promoted about 150,000 mu in Wangjiang, Susong, and Fengtai, and has achieved good economic, social, and ecological benefits. In one fell swoop.
The rice-duck symbiosis technique is that after the seedlings are planted (7 to 10 days), the temperature-removed ducklings (7 to 10 days old) are placed in paddy fields 24 hours a day until the rice is recovered after heading grouting and the ducks and ducks are symbiotic. The time is about 70 days. The technical points are as follows:
Rice field preparation. Paddy fields need to choose flat and contiguous fields with adequate water supply. Paddy fields should always be kept at a depth of about 10 cm. Because duck dung may not keep up with the growth of rice, it is necessary to apply a certain amount of basal fertilizer, mainly organic fertilizer. To facilitate the activities of the ducks in the field, the seedlings should be planted and sparsely planted, with a spacing of about 25cm30cm.
Duck preparation. Rice-duck commensal seeding technology emphasizes that both rice and duck need to coexist and grow together for mutual benefit, so priority should be given to small size, wide adaptability, strong resistance, strong viability, long field activities, and large amounts of activity. The meat, eggs, eggs, or hybrid ducks with strong functions, such as eating, wildlife, and meat quality are the preferred varieties. Such as Anhui Chaohu Ma duck, Jiangsu Gaoyou duck, Jiangxi Hongmao duck, Sichuan Jianchang duck and Zhejiang, Hunan, Jiangxi, Fujian duck. The oversized duck breeds will eat or overwhelm and kill the seedlings. Moreover, large-sized meat ducks are not good at exercise and are not suitable for use in rice-duck symbiosis. Since ducks generally have a 28-day incubation period, 7- to 10-day-old ducklings are best placed in paddy fields, so rice can be sown 2 days after hatching.
Preparation of protective nets and duck sheds. In order to prevent natural enemies from attacking and prevent ducks from scampering in the fields, protective nets must be set up around the rice fields. The protective net uses a general fish net. If conditions permit, then put three thin wire outside the fishnet. In addition, in order to prevent strong light and heavy rain, a simple duck shed was built for ducks in the corner of the rice fields.
Duck and field management. After the ducklings are put into the field duck canopy, 20 to 30 square meters of ducklings are placed in the paddy field near the duck shed in advance. After 2 to 3 days of feeding, the nets of the initial placement area are put into the field activities. The purpose is to Be familiar with the environment and prepare for ducking and later catching ducks. 15 ducklings per acre of paddy field were used for feeding. In addition, in order to meet the initial green feed for ducks, some duckweed plants can be put in paddy fields.
After the ducks were put into the rice fields, the field management of rice, including weeding, insect removal, cultivator and fertilization, was all given to the ducks. In order to meet the needs of early growth and development of ducklings, the feed for ducklings needs to be replenished 2 to 3 times a day for 3 weeks. After 3 weeks, some duck feeds are supplemented daily or every other day, and can also be supplemented with leftovers of agricultural and sideline products. For example, indica rice, sub-grain, etc., the amount of supplementary feed is judged based on the number of weeds in the paddy field, the number of aquatic animals, and the growth of the duck.
The duck's back. Because the ducks like to eat rice, the ducks will be withdrawn from the rice fields when they begin heading grouting. In order to successfully recover the ducks from the rice fields, it is necessary to establish a good exchange between people and ducks when feeding ducks every day. When the ducks need to be retrieved from the rice fields, the ducks are concentrated in the duck sheds and the duck gates are closed when the ducks are fed. The ducks can then be withdrawn from the rice fields.
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