A timely release film. After sowing rice for 7-10 days, after the seedlings have reached one leaf and one heart, they should begin to ventilate and strengthen the seedlings. The ventilation process should be from small to large. The seedling quality and stress resistance should be changed from weak to strong, and the seedlings can be uncovered when they grow to three leaves. . Film removal time, cloudy morning exposing, sunny evening exposing.
Second, science and disease prevention. According to the weather conditions, in order to effectively prevent “cold springâ€, after the film is uncovered, it should be carefully observed and effective measures should be taken in time to prevent the wilt and blight. The specific methods are as follows: First, after removing the film, Tian Shui appropriates deep protection seedlings for 3-5 days, withdraws shallow water with enemy cough 100 g/m3, and pours water into the fields to control rice bacterial wilt and blight. The second is to find the central diseased field, can choose 25% metalaxyl WP 800-1000 times spray or according to each field with copper sulfate 15-20 grams, dissolved in water after pouring, when applied to block A good outlet.
Third, scientific fertilization. The Xiaoyan 2-3 leaf period is the "weaning" process of Xiaolong, and the seedlings have very weak self-resistance. Therefore, it is necessary to top-dress fertilizer in appropriate amount, and each day, 1.5 kg of urea should be planted. One week before transplanting, the husbandry fertilizer was applied, and 2 kg of urea was applied for each field, and the water was washed after dressing.
Fourth, timely transplanting. Under conditions of water conservancy, plants should be planted in due time, with the age of 45-50 days. If the water conditions are poor, in the third leaf stage, spraying 1-2 times of paclobutrazol in the rear view, controlling the seedlings, increasing the flexibility of the younger ages and preventing the old seedlings.
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