-
Methods for Extending Rice Seedling Age and Key Points for Preparing to Transplant Rice While Waiting for Rain as a Drought-Resistance Measure
In a normal year, the seedling age for machine-transplanted rice is about 30 days, about 40 days for seedling-throwing rice, and about 50 days for water-raised seedlings. If the water for transplanting comes late, the seedling age must be extended to more than 60 days in order to wait for water before transplanting. First, sow sparsely to cultivate strong seedlings of extended age. That is, by expanding the area of the seedling-raising bed and reducing the sowing rate per square meter, the tillering-stagnation period of the seedlings is prolonged, which can effectively increase the seedling-age flexibility of seedlings sown early at the proper time and improve seedling quality; this can both raise per-unit yield and resolve the contradiction of having no water for transplanting in the early period.
-
Why do the lower leaves of peanuts have spots while the upper leaves are curled?
The preliminary diagnosis is leaf spot disease with a mixed occurrence of scab. It is recommended to spray the foliage with carbendazim, thiophanate-methyl, Aimiao, Score (difenoconazole), Daconil, Amistar, etc. It is best to select two chemicals and use them alternately, applying once every 5-7 days for 2-3 consecutive applications. At the same time, spray the foliage with potassium dihydrogen phosphate.
-
What are the key technical points for harvesting asparagus while retaining the mother stalks?
Asparagus stem blight is a devastating disease known as "asparagus cancer." Once stem blight occurs, it causes reduced yields in mild cases and total crop loss in severe cases, bringing huge losses to asparagus growers. Affected by the 2003 SARS outbreak, asparagus prices were low, many growers abandoned management, stem blight outbreaks were relatively severe, and asparagus fields...
条件筛选