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First, the construction of a kind of rice Dianchi Lake Each pond area of ​​more than 3 acres, up to 80 acres; the bottom of the pool to maintain the original rice paddy, only flat not deep digging; Dianchi surrounded by cement bricks, wall height 1.2m, can maintain Water level 1m; Dianchi's inlet and outlet water channels are divided, and the influent channel is built on the bricks and ponds, and the three sides of the channel are required to be smooth; the water outlet is controlled by a PVC elbow to drain the pool water, requiring convenient drainage and irrigation in Dianchi Lake.
Second, the pattern of japonica rice rotation is usually cultivated for 2 to 3 years and planted rice for one season. In mid-May, juveniles are stocked. The cubs are weighed around 180 g and stocking densities are between 500 and 1000 mu per mu. The Soft-shelled Turtle Feed is fed with live fish and caught before the end of July of the following year. Late rice is planted at the end of July to early August. During the rearing process, in addition to clearing the ponds with medicines such as quicklime, no chemical drugs such as antibiotics and chlorine preparations are used, and Chinese herbal medicines such as Banlangen are often used for disease prevention. Regarding rice cultivation technology, due to the fertile soil in Dianchi Lake, it is necessary to select high-quality varieties with dwarf stems, such as Shanyou 1, 98-110, etc., followed by cultivation techniques with respect to “prevention†and adopting “two controls and one defenseâ€. "Technology", that is: a control fertilizer, no fertilization throughout the growth period; second control water, the method is early field control seedlings, till the end of the tiller reaches 80% of panicles when the seedlings are reloaded, so that the rice roots deep; late wet irrigation, prevent Lodging. Only pests are not disease-resistant, and the rice planted can reach the pollution-free rice standard.
Third, a few experience
1. The japonica rice rotation model is a better mode of ecological farming. Fertilizer crops and fertilizers are used for planting rice. Through plant and animal rotations, not only the pests and diseases are reduced, but also rice cultivation in japonica rice rotation areas requires no farming and no fertilization. Only a small amount of pesticides are used to treat insects, and labor is reduced.
2. The pattern of japonica rice rotation combined with the mode of polyculture of fish gills and the rotational rotation of barnyardgrass forms a relatively complete ecological breeding system. According to the different fishing seasons, they choose to plant rice, corn, and barley, etc. At the same time, fish can also be reared in the rearing pond, and the perennial barley is fed to the herbivorous fish to form an ecological breeding and circulatory system.
3. The indica rice rotation model has good ecological, economic and social benefits. Raising earthworms can increase the fertility of paddy fields, and rice cultivation can improve the sediment quality of Dianchi Lake. After the rotation, the pests and diseases of indica rice are reduced, and the ecological benefits are very obvious. Raising rice fields raises the economic benefits of paddy fields. When Dianchi rice was grown, it was not fertilized and the use of pesticides was small, which reduced the production cost, and the rice yield increased by about 13%. The economic benefits of dipping rice in Dianchi Lake were higher than those of pure paddy rice fields. Implementing the japonica rice rotation is conducive to stabilizing the grain area, increasing the fertility of the land, and increasing the unit output rate. It has good ecological, economic and social benefits. The japonica rice rotation model is worthy of promotion in production.
Indica rice ecological rotation technology
In recent years, the Chinese eel farming industry has developed rapidly, adopting the indica rice rotation mode, which can not only make rice without fertilizing, but also can improve the sediment quality of the eel pond and reduce the incidence of caries. Zhejiang Qingxi Sengye Co., Ltd. started the japonica rice rotation experiment in 1999. In practice, it summarized the ecological rotation mode of “culturing 2 to 3 years of glutinous rice and planting one-season rice†and it has been popularized and applied in production.
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