The rice fertilizer bed is dry and sparsely planted, the seedlings are short and strong, the roots are strong, and the cold resistance is good. After planting, the trees are fast, with explosive power, strong tillering, high rate of ear formation, large ears and large grains, good fruiting; Early maturity, mature 3 to 5 days earlier than conventional cultivation ; increase the income of the section, increase the income per mu of rice by 50 kg, save 80 % of the field and the agricultural film , and save 20 % to 50 % of the seeds . The key to this technology is fertilization seedbed, dry cultivation, thin planting, and reasonable fertilization.
Fertilizer seedbed: Fertilizer bed is a seedbed that increases the content of nutrients such as soil organic matter, improves soil aggregate structure, and improves fertilizer fertility and water storage capacity. Per acre seedbed before winter rice straw 2500 to 3000 kg, dung 1500 to 2000 kg, SSP 150 to 200 kg urea per acre before sowing 50 to 60 kg, SSP 100 to 150 kg, chloride Potassium 30 to 50 kg, fertile soil.
Dry breeding: Drought exercise on the seedlings during the nursery, control the growth of the shoots, promote the roots and accumulate nutrients. Maintain soil moisture content above 80 % during the emergence period, and control moisture in other periods to keep it moist. At noon, the seedlings are watered in the evening when they are rolled, in order to pour the topsoil. In case of rainy weather, timely drainage and dehumidification, to ensure that the rain stops the field, so as to avoid the high growth of the nursery, and lose the advantage of dry nursery.
Sparse planting: The fat bed has a strong growth advantage of leafhoppers in the field, and the planting density should be less than that of water sputum. The basic seedlings are less than leeches. The specific density depends on the sputum, variety and fertilization level. Hybrid rice is about 15,000 acre per mu, and the basic seedlings are planted 50,000 to 60,000 yuan; the conventional rice is 18,000 to 20,000 acre per acre , and the double seedlings are planted with 60,000 to 80,000 seedlings. The advantages of 秧 得到 are brought into play.
Rational fertilization: The leaf axils grow fast in the early stage of drought and flood, and the root function period is long in the late stage. The proportion of fertilizer used in the early stage should be reduced, and the amount of grain fertilizer should be increased to prevent the growth of stems in the early stage. The application ratio of base fertilizer, tiller fertilizer and panicle fertilizer is 4:2:4. When ammonia nitrogen is used as the base fertilizer, it should be applied before the tillage, and the top dressing should be applied dry and watered after application.
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