Technical Overview: Accurate quantitative rice cultivation techniques include quantification of diagnostic indicators for rice growth and development, quantification of high-yield population quality indicators, and quantification of cultivation techniques. Through the leaf age model diagnosis, precise quantification was performed on indicators closely related to yield formation such as population morphological structure and physiological functions, and rice high-yielding populations were cultivated to achieve high yields.
Increase production and increase efficiency: Muping increased production by 15-17%, saving 15%, saving water by 20-28%, and Muping increased the benefit by 25%.
Technical points: First, accurate ration for the appropriate planting period. The heading-maturity period was set under the best climatic conditions, and the suitable sowing date was determined according to the number of days from sowing to the optimum heading date, and the transplanting period was determined according to the age and the characteristics of the varieties. At the same time, it is required to cultivate strong pods. The suitable cultivars for transplanting pods are 4-leaf stage, the initial stage for hand-planting pods is 5-leaf stage, and the stage for high-yielding larvae is 5-6-leaf stage, and the maximum is 7-leaf stage. The seeding density was determined according to the age of transplanting leaves and the individual's luxuriant degree, and the fertility was determined according to the soil fertility and nutrient content. The amount of fertilizing and time for topdressing were determined according to the length of age.
Second, the precise ration of reasonable basic seedlings. Reasonable basic seedlings = suitable number of seedlings per panicle/number of reliable panicles per plant. At the same time improve the quality of transplanting. Shallow insertion (2-3 cm) to promote premature hair. Expanding the row spacing, widening the narrow lines, and controlling the period of peak seedlings and seal lines, create conditions for increasing the amount of nitrogen panicle fertilizer and delay the senescence of the middle and lower leaves during the fruiting period.
Third, the precise amount of fertilizer and fertilization methods. The proportions of reasonable application of nitrogen, phosphorus and potassium are determined through soil testing formulas, etc., and then the total amount of nitrogen applied, the total amount of nitrogen applied = (the amount of nitrogen needed for the target yield - the amount of nitrogen supplied to the soil)/the utilization rate of nitrogen fertilizer in the season, Under the precondition that the total amount of nitrogen applied is reasonable, the ratio of base tiller and panicle fertilizer should be reasonable.
Fourth, accurate quantification of high-yield groups. In the early period, the focus was on controlling ineffective delivery and raising the rate of stalk stalk formation. In the middle and later stages, the purpose was to improve the overall quality of the population and enhance the photosynthetic productivity of the sturdy population. (1) Transplanting seedlings The live tiller stage is mainly irrigated in shallow water layer (2-3 cm). The machine seedlings are small and the field is kept moist. Generally, it is not appropriate to establish a water layer. (2) Put the field early. When the total population of stalks reached 80% of the number of panicles, drainage began to be put down. (3) jointing - Wet irrigation during the mature period, dry and wet.
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