The tillering period of rice is a crucial period for determining effective delivery and is the basis for obtaining high yields. Therefore, management techniques during rice delivery are very important. At present, rice is in the period of childbirth in Daejeon. In order to cultivate a strong and prosperous crop, we have established a high-yield shelf and put forward the following technical measures.
Science Management Water
Transplanting survival period should be kept 3-4 cm of field water, so that the field formed a more reasonable insulation, moisturizing environment, promote the occurrence of new roots, quickly return to green live trees. After returning green, the seedlings enter the tillering stage and should be irrigated with shallow water, generally maintaining a 2-3 cm water layer. When the rice tillers reach the number of tillers required for the expected yield, the field should be drained. Sundry has the effect of inhibiting soil nutrients first and then promoting them. It has a good effect on the control of rice populations, the promotion of vegetative growth from rice to reproductive growth, and the cultivation of large ear and multiple grains. Sun Tian generally grasps clay fields, low-level fields, and heavy fields. Sandy field, thin field light. The sun usually spreads to small cracks in the field, the foot does not fall, the leaf color fades, and the leaves stand upright. This will control the production of invalid labor and increase resistance to lodging and resistance to pests and diseases.
Early application of fertilizer
After rice returns to green, the amount of fertilizer needed gradually increases. At this time, the root system is mostly distributed in the topsoil and the supply of nutrients is insufficient. The tiller fertilizer should be applied in time. Generally, 5-6 kilograms of urea are applied in the mu, spread evenly, and keep the shallow water layer. Fertilizer should be used to control the fertilization field and thin fields. Fertilization method: The first is to apply fertilizer early. It is generally applied immediately after returning green. The second is to see seedling fertilizer. 80% of the tiller fertilizer is spread throughout the field, and the remaining 20% ​​will see the growth of the field. In this way, Quantian grows up to basically the same level. After fertilization, the field must have a water layer and it must not be drained, and it should be drained naturally after being dried.
Pest Control
Disease: mainly leafhoppers. In the early stage of leaf blasting, mu with 75% tricyclazole 30 g or 40% Fuji No.1 EC 100 ml, add 30 kg water evenly.
Insect pests: mainly rice borers and rice planthoppers. The control of rice locusts generally uses 100% of 20% triazophos EC or 50 grams of 80% insecticides per acre, plus 30 kg of water spray. The prevention and control of rice planthoppers use 10% imidacloprid wettable powder 20g per mu or 80% dichlorvos 100ml water 30kg spray.
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