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在大搞早稻温室无土育秧的同时,我们进行了喷冷水育壮秧的实验,收到了较好的效果。原先喷洒水或肥料液时都要经过预热到与温室相等的温度,但水温还是不稳定,不高就低,不仅增加了育秧员的工作量,且秧苗幼嫩细软易折断,黄化不齐,栽插后遇低温寒潮时,死苗率显著增加。营养液在预热时,因蒸腾作用,还会降低铵的含量,造成氮素的损失和浪费。喷冷水育成功的秧苗硬健挺拔,不易折断,秧身紧凑,生长整齐,叶色清秀,苗长根短。经观察,它还具备有独特的抗寒力;栽后几天,就遇上5天的低温寒潮天气,喷冷水的无死苗现象。为什么喷冷水能育壮秧呢?我
In the early rice greenhouse soilless seedlings at the same time, we carried out the experiment of spray cooling water cultivation strong seedlings, received good results. The original spraying of water or fertilizer liquid should be preheated to the same temperature with the greenhouse, but the water temperature is not stable, not high and low, not only increased the workload of nursery staff, and delicate young soft seedlings easily broken, yellowing is not Qi, planted in case of cold wave, the mortality rate increased significantly. Nutrient solution in the preheating, due to transpiration, but also reduce the ammonium content, resulting in nitrogen loss and waste. Spray cold water fertilization successful seedlings healthy and upright, not easy to break, the seedling compact, tidy growth, leaf color handsome, short roots. After observation, it also has a unique cold resistance; transplanting a few days, it encountered five days of cold and cold weather, spray no cold seedling phenomenon. Why fertilizing strong seedling spraying water? Me