2 cultivation techniques 2.1 Drought and Development Choosing a good breeding plot, making a bed in the autumn, and ensuring the conditions for dry cultivation, using a large or medium shed carcass disc or isolation of 75 layers (machine inserts) dry seedlings, advance sheds, timely sowing, sowing date is April 10 to 15 . The sowing volume was: carcass pan-row seedlings, 2 to 4 per plant sowing seed; machine plug-in seedlings, sowing 100g per plate; hand-inserted isolation seedlings, shoots 250g/m2. Strengthen the temperature control and moisture management during the seedling period. Before the emergence of closed insulation, see the emergence of green seedlings after ventilation, temperature control in a leaf stage ≤ 30 °C, two leaf stage ≤ 25 °C, three leaf stage ≤ 20 °C, 3 ~ 5d before transplanting remove the film. If there is no dew on the tips of the seedlings, sooner or later, it indicates that the bed soil is short of water. It is best to irrigate the water once in the morning, do not dry or water, and keep the bed soil moist. Strong and strong standard: Plant height is 14～16cm, leaf width is thick and erect, leaf color is bright green, auricle spacing is short, white root is more, aerial dry weight of aboveground is 3.5g or more. 2.2 Honda transplanting Honda's fine and smooth, timely transplanting, generally in May 15 to 20; transplanting density of 16 to 18 points / m2; depth appropriate, the depth does not exceed 3cm. 2.3 Honda Fertilization According to the characteristics of the varieties and local soil fertility conditions, local conditions, increase organic fertilizer, applied into the decomposed farmhouse fertilizer 15-20m3/hm2; rational use of chemical fertilizers, so that control of nitrogen fertilizer, increase phosphorus and potassium fertilizer, generally N: P: K = 2:1:1; nitrogen fertilizer application (pure nitrogen) 150kg/hm2, 50% of base fertilizer, 30% of tiller fertilizer (application immediately after greening, generally early June), 20% of panicle fertilizer (applied 20 days before heading, generally July 1st to 10th; Phosphate application (pure amount) 75kg/hm2, as a base fertilizer for one-time application; potash application (net dose) 75kg/hm2, of which base fertilizer 60%, panicle fertilizer 40% (with nitrogen fertilizer). 2.4 Honda Irrigation In addition to the water used for the operation, the method of alternate shallow water-saving irrigation was used during the whole growth period to increase the amount of white roots. In general, the seedlings are watered by irrigation, and the shallow water irrigation is maintained after the seedlings are grown to facilitate the early birth and rapid growth of the childbirth. When the number of stems reached 80% of the planned number of stems, the control of tillage was started and the rate of success was increased. In order to avoid damage to the root system of a heavy row, it is better to use 2 times of lightening. Booting stage is the most time for rice water demand, this period do not cut off water, in case of low temperature irrigation 20cm deep water protection (average daily temperature below 17 °C or the lowest temperature below 15 °C); heading shallow water intermittent irrigation, into the milk phase and wax During the ripening period, shallow wet-dry alternate irrigation was used. During the ripening period, water was completely stopped 7 to 10 days before harvest. 2.5 Strengthen the control of pests and weeds Before weeding, the herbicide should be applied at the end of the water preparation and during the sedimentation of the mud. The poisonous soil should be used to apply the pesticide and the water layer should be kept for 5-7 days after application. Attention should be paid to the prevention and treatment of rice smut and stem borer.
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