论文部分内容阅读
1 萍种的选留在10月下旬把叶厚,根系发达没有病虫害的萍体选出来,留做种萍,移到保种池,保种池内要施磷肥,精心复壮,促进萍种的原系根脱落,长出新根后,11月上旬移入越冬池。2 备土、入萍越冬池在入萍前一周垫约10厘米左右厚的肥沃土壤,用60％园田土和40％粪堆底土配合效果较好,pH值6—7为宜。垫土后装满水,把萍种放进后不再添水,经3—5天后人工撤水至萍根接触土壤为止,然后自然蒸发,水位下降,萍根伸进土壤里,最后土壤含水量达60—80％左右即可,每平方米入萍为2.5—3千克。
1 Ping species selection In late October the leaf thick, root system without pests and diseases of the Ping body elected to stay kind of Ping, moved to Paul seed pool, Paul seed pool to be applied phosphate, rejuvenation, and promote the original species of Ping Department of root off, grow new roots, in early November into the winter pool. 2 Preparation of soil, into the Ping winter pool In the week before the pad pad about 10 cm thick and fertile soil, with 60% garden soil and 40% dunce subsoil with better results, pH 6-7 is appropriate. Pad soil filled with water, the Ping species into the no more water, by 3-5 days after artificial withdrawal of water to Ping root contact with the soil, and then natural evaporation, the water level decreased, root penetration into the soil, the final soil moisture content Up to 60-80% can be about 2.5-3 kg per square meter into the Ping.