Strengthen Fertilizer and Water Control of Diseases and insect pests and build a High-yield Seedling frame for late Rice in September

In September, the southern double-cropping late rice will gradually enter the young panicle differentiation stage, because there are more Rain Water after the late rice is thrown this year, which is beneficial to the growth of fish and grows well. In this period, it is necessary to control tillers and stalks, strengthen fertilizer and water management to improve panicle rate, promote large panicles and more grains, and control rice stem borer of the fourth generation, leaf borer of the fifth generation, and planthopper of the sixth generation, so as to set up a seedling frame for the high yield of late rice.

Fertilization of late rice

First, carry out classified guidance. There are many varieties of late rice this year, the throwing and planting seasons are different, and the growth progress is quite different. It is necessary to take measures in accordance with local conditions, do a good job in Miao station teams, and carry out classified guidance. For late rice fields that have been over-tillering stage, we should pay close attention to drainage and sun-drying fields to control ineffective tillers, and set up seedling racks for sufficient ears and increasing panicles; late planting fields, due to long seedling age, aging seedlings, relatively poor seedling quality, slow tillering and short tillering time, early application and heavy application of tillering fertilizer to speed up tillering; the second kind of seedlings should pay close attention to the application of fast-acting fertilizer to let its balanced growth, and at the same time, shelving the field must be from light to heavy. For the three types of seedlings with weak growth potential, it is necessary to analyze the causes, prescribe the right medicine to the case, and promote the transformation of seedling conditions; for low-lying fields affected by waterlogging, drainage and ventilation to promote roots, topdressing and application of quick-acting fertilizer, supplemented by artificial ploughing; for fields that are not over-tillering due to late planting, seminiferous tubules should be sprayed (potassium dihydrogen phosphate) and promoted (quick-acting fertilizer) to promote them to tiller too early.

Second, manage water scientifically. Late rice is sensitive to water before young panicle differentiation, long-term waterlogging will damage the root system, if long-term water shortage and drought, it will affect young panicle development, spikelet degeneration, spike grain reduction, and reduce yield. Therefore, in the middle stage, the field management should promote the scientific use of water and keep the soil moist in the form of intermittent irrigation of "horse race water". The fields with enough seedlings should be dried in time in order to reduce the ineffective division and increase the panicle rate. Sunning the field not only depends on the situation of the seedlings, but also depends on the weather, water sources and varieties, so that when the seedlings are not equal, the time will not wait for the seedlings. It is required that the field should be well dried before the application of fractional chemical fertilizer, so as to achieve the goal of nourishing roots with gas, protecting leaves with roots and increasing grains with leaves.

Third, make good use of chemical fertilizer. Late rice in September has entered the stage of young panicle differentiation, seize the opportunity, apply separate chemical fertilizer, pay attention to fertilization techniques, strive for more panicles, compete for large panicles and improve seed setting rate. After the application of chemical fertilizer, the rice seedlings changed from black to yellow after roasting, and fertilizer was applied 2-3 days before panicle differentiation. Second, if the soil is fertile, the growth is too prosperous, and the effect of drying the field is poor, separate chemical fertilizer can be applied lightly or temporarily, and then apply it as appropriate according to the situation of falling yellow. General mu 5-7 kg urea plus 5-7 kg potassium chloride or 10-15 kg compound fertilizer, depending on the specific seedling situation to determine the amount of nitrogen fertilizer. When applying chemical fertilizer, there should be a shallow water layer in the field. After application, the water layer should naturally dry. If the ear fertilizer is applied early, it can be exposed for a few more days. After the late water layer dries, the shallow water layer will be irrigated again.

Control of diseases and insect pests in late rice

Fourth, disease and pest control. The main diseases and insect pests of late rice, such as rice blast, sheath blight, bacterial leaf blight, fine stripe, rice leaf borer, Chilo suppressalis, Chilo suppressalis, rice planthopper, etc., pay close attention to the occurrence of diseases and insect pests, make good forecasts, and take timely measures to reduce the harm of diseases and insect pests. Control rice blast with Fuji No. 1, plus rice, imidamide, tricyclazole, Kexian powder, etc.; control sheath blight, use Aimiao, Jinggangmycin, sheath disease clear; control bacterial diseases such as bacterial blight and fine stripe disease; use leaf leaf roller, dragon fungus, mirabilis, etc.; control rice leaf roller, Chilo suppressalis, rice planthopper, etc., use Fogo, Kangkuan or (Huofenghuang, Lanrui, Yinnong No. 1) plus acetamiprid, prolice, etc.