There are six points to note in the prevention methods:
The first is to improve the way of raising children. According to local conditions, the use of dry seedlings and sparse planting techniques, or greenhouse vapor priming, or film coverage.
The second is to pick seeds. Choose seeds with good maturity, high purity and cleanness, and soak in seeds before sowing.
The third is soaking soaked. Embryos inflated and the chaff is translucent. The germination should be done at a high temperature (36-38°C dew, proper temperature (28-32°C) for rooting, watering long shoots, and low-temperature hardening.†ABT4 rooting powder can also be applied at a concentration of 13mg/kg in the south. Seed soaking in the rice region for 2 hours, soaking the seeds in the northern rice region for 8-10 hours, removing the water and then flushing with water, or spraying the seedlings for 3-5 days prior to transplanting, with the same concentration as above. Excellent effect.
The fourth is to improve the quality of sowing. According to the variety characteristics, the sowing date and seedling age were determined. The average daily temperature is stabilized at 12°C and sowed in open field tillers, evenly planted. According to the weather forecast after 3-5 sunny days, it is advantageous to adjust the soaking and germination time for the buds to turn green. It is advisable to sow half grain in the valley, so as to maintain the vertical shoots after sowing.
The fifth is to strengthen fertilizer and water management. In the bud stage, the main seedlings are rooted and maintained. Wet surfaces are kept moist. We cannot use water in the morning, and temporarily protect the buds in case of frost. After the first leaf is unfolded, it can be properly irrigated, and 2-3 leaves can be irrigated to reduce the temperature difference and heat preservation and antifreeze. The cold wave is about to be flooded with “blocking the waist water†to protect the seedlings, and the cold air will be turned into normal management later.
Sixth, chemical control. In the event of rotting, it is possible to use a 95% Green Hunter No. 1 (badaming) product 4500 times, or 25% metalaxyl WP 800 times, or 65% dexamethasone 700 times. If blight or cotton rot occurs, 40% extermination powder or 30L Riconazole 500 times is preferred. It is recommended to spray Zhuang Fengan Rice Special Plant Growth Regulator or Plant Power 2003 to effectively prevent and cure diseases and restore seedlings to life.
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