Rice seedling management techniques for dry nursery
1. Temperature management: 25C is preferred from one leaf to the second leaf, and 20C is appropriate for the temperature of the three leaves. The temperature is high and there is leggy and physiological blight. The temperature is controlled and the air conditioning is performed after the three-leaf period. seedling. Enhance seedling resistance and cultivate strong seedlings.
2, water management: Generally not suitable for irrigation within the three-leaf period, the seedling leaves are not yellow, not rolling leaves can not water. After the three-leaf period, according to the temperature, bed soil moisture situation, can be appropriate amount of water, avoid flood irrigation, the principle is appropriate for artificial watering.
3, Fertilization: bed soil organic content is high, the normal color of the leaves, do not need to make up the fat, appear when the leaves become smaller and yellow, can be less fertilization, 5 grams of urea per square meter can be, when the fertilization to water, a drenched .
4. Control of pests and diseases in seedling stage: timely control of blight was found. Long-acting pesticides were sprayed three days before transplanting to prevent leaf miners and bring pesticides to prevent field pests.
2, water management: Generally not suitable for irrigation within the three-leaf period, the seedling leaves are not yellow, not rolling leaves can not water. After the three-leaf period, according to the temperature, bed soil moisture situation, can be appropriate amount of water, avoid flood irrigation, the principle is appropriate for artificial watering.
3, Fertilization: bed soil organic content is high, the normal color of the leaves, do not need to make up the fat, appear when the leaves become smaller and yellow, can be less fertilization, 5 grams of urea per square meter can be, when the fertilization to water, a drenched .
4. Control of pests and diseases in seedling stage: timely control of blight was found. Long-acting pesticides were sprayed three days before transplanting to prevent leaf miners and bring pesticides to prevent field pests.
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