Rice field pisciculture, can saying is China one of tradition farming agrarian culture " the quintessence of a country " . This kind of means also cries now " paddy fish is made in all " , return some places to have " paddy shrimp (crayfish) make in all " , " paddy - fish - duck " make in all wait for different pattern.
Paddy is in growth period, farmer the corresponding period raises shrimp to raise duck to wait in the pisciculture in water, advantage is one ground amphibious, cultivate breed photograph union, piscine dung can fertilize the soil, can reduce investment of chemical fertilizer pesticide again. With one action is much.
Paddy fish makes the zoology agriculture way that serves as a tradition in all, become one of heritage of important agriculture culture even, be in Zhejiang for instance Qing Tian, Guizhou from river and other places, this kind of stereo type grows combinative mode has continued chiliad.
Traditional paddy fish is made in all, basic jumping-off place is with water seed rice establish is given priority to, aquiculture of give attention to two or morethings. After all all the time since " it is key link with grain " , people should ensure above all satiate abdomen. Nowadays, still have the transition of a kind of train of thought: Give priority to in order to breed, complementary in order to plant paddy.
As promotion of level of agricultural science and technology, a few agricultural breeding personnel breed the paddy variety that suits pond of pound, shrimp. This kind of paddy is a characteristic with tall lever big spic, suit the surface height of pound more.
Pond paddy compares thick 1~2 of stalk of common paddy bine times. Paddy of Zun Weichi pond, right for common paddy
According to researcher of Chinese paddy institute square blessing makes the same score the introduction, fresh water breed aquatics, paddy is not planted to also want kind of aquatic in the pond, compare with aquatic photograph, of paddy purify ability stronger. The nitrogen that breeds pond aquatic product to absorb, phosphor occupies the 3%~25% of devoted gross only. There is 4 to be in into or so remain about in leftover nutrient water system is medium, other 4 be in into deposit bottom mud, because mud of this purify bottom is mixed,the redundant nutrient in water system is the key that water system purifies.
