First, the standard operating technical regulations Select the appropriate strength agent based on soil type, pH, organic matter content. Use the correct method to use Zhuang Ling agent reasonably and efficiently.
Second, bed soil pickling acid rice is a sour acid crop, rice seedlings suitable for soil pH 4.5-5.5 under the acidic conditions. And can inhibit the proliferation of Rhizoctonia solani, so that rice root system developed, white root and more to improve seedling quality.
Third, timely early sowing early rice transplanted rice is a good acid crop, rice seedlings suitable for soil pH 4.5-5.5 under the acidic conditions. And can inhibit the proliferation of Rhizoctonia solani, so that rice root system developed, white root and more to improve seedling quality.
Fourth, strengthen the temperature and humidity management of seedbeds Reasonably carry out ventilation and watering, and adjust the temperature and humidity of the seedbed with proper ventilation and watering methods. The general principle is that 80% of seedbeds see green (ie see 80% of needles) ventilated, ventilation increases with the outside temperature, gradually increase ventilation, ventilation windy days windy face, the other three sides according to the outside temperature and seedbed The situation is adjusted as appropriate. Watering is combined with weather changes to control the humidity of the seedbed to prevent the seedbed from being in a state of low temperature, high humidity, or high temperature and high humidity. Watering must be done at one time.
V. Mid-seedling acid supplementation During the 2.5 leaf stage of rice, if the ph value of the seedbed is high, it is not conducive to the growth of rice, the leaf color of rice seedlings becomes light, the roots are stunted, the ability to absorb water is poor, the quality of seedlings is reduced, and the incidence of damping-off occurs. high. During this period, attention should be paid to timely supplementing the acid and adjusting the ph value of the seedbed to create a good growth condition for the growth of the seedlings. However, the amount of acid-adjusting products should not be too high. When using, pay attention to the PH value of the seedbed to test the PH value of the seedbed of 5-6, and avoid causing acid damage.
Sixth, drug control found that the emergence of seedling disease, do not blindly use drugs, to be combined with seedling growth environmental conditions to control. Mainly to prevent diseases in fitness, supplemented by treatment. By improving seedling pH, temperature and humidity, supplementing available nutrients (such as ammonium sulfate for seedbeds), promoting rooting of seedlings (spraying rooting agents), controlling bacterial wilt pathogens (such as hymexazol, metalaxyl, carbendazim, etc.) ) Several aspects such as comprehensive consideration, due to time, place, due to seedlings for prevention and control.
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