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浙江省农科院士肥所经过多方面探索,建立了新的桑、草、鱼配套种养模式“三种一清”--在桑园里夏种苏丹草,秋种黑麦(冬牧70) ,冬种豆科绿肥作塘鱼饵料和桑园肥料,年底清塘挖泥育桑。这种模式能使桑树自身难以利用的光、热、水、肥、气资源得到充分利用,建立水陆物质交换新的生态体系,提高了桑园的综合经济效益。夏季桑地种植的牧草苏丹草具有抗性好,耐热、耐旱、耐踏及生长快的特点,每公顷产22500-3000公斤,干物质含粗蛋白质20 5％。它能留茬再生,可多次收割利用。根系大部分
Zhejiang Province Academy of Agricultural Sciences fertilizer after many exploration, the establishment of a new mulberry, grass, fish supporting planting and breeding mode “three kinds of a clear” - in the mulberry Sulpa grass, autumn rye (winter pastor 70), winter seedling legume green manure for pond fish and mulberry fertilizer, the end of Qing pond dredging Yusang. This model can make mulberry tree itself difficult to use light, heat, water, fertilizer, gas resources are fully utilized, the establishment of a new ecological system of exchange of water and land substances, improve the mulberry comprehensive economic benefits. The grass Sudan grass planted in the summer mulberry has the characteristics of good resistance, heat tolerance, drought tolerance, rapid growth and rapid growth. The yield is 22500-3000 kg per hectare and 20 5% of the dry matter contains crude protein. It can stubble renewable, can be harvested several times. Most of the roots