Summer soybean plants are small and have a short growth period. In order to obtain higher yields in a limited time, field management should be based on promotion and “three early and two coincidencesâ€.
1 . Morning seedlings, uniform seedlings, summer soybeans, short seedlings, early seedlings, early seedlings. When mu 3 cm high, with thinning Dingmiao cultivator, slightly greater than 30,000 mu Dingmiao density, thinning and Dingmiao to once.
2 . Early and moderate tillage Summer soybean seedlings have high temperature, heavy rain, short seedlings and small ground cover. Therefore, the seedling stage should be ploughed early, break the soil compaction, keep the soil loose and soft, prevent grass shortage, and promote seedling roots. General cultivators 2--3 times required before the end of flowering.
3 . As early as backward people dressing more soybean flowering vegetative and reproductive growth stage joint, water demand surge in the amount of fertilizer needed, it should be combined with the beginning of flowering cultivator Mushi urea 7--10 kg. Found slow growth of soybean, small leaves and dark color, earlier reported dressing time can be 7-10 days per acre fertilization 10--15 kg is appropriate. For the phosphorus-deficient plots, the flowering period can be applied to 25 kg of calcium phosphate . Flowering pod period of weak seedling available dihydrogen phosphate hold 0. 3 % liquid spray, can be applied to Wang Miao with a multi-effect sigh 200 mg / kg liquid foliar spray, which can increase the yield.
4 . Skillful irrigation of soybeans often encounters high temperature and dry weather during sowing or seedling stage. Plots with irrigation conditions can be properly watered to maintain soil moisture at around 20 %. Watering at the appropriate time during the pod period keeps the soil moisture at around 30 %, which is conducive to the increase in yield.
5 . Ingeniously prevent pests and diseases during the flowering period with enemy killing or kungfu 1000 times liquid 75 ~ 100 kg / mu spraying 2 - 3 times, anti-soybean heartworm, each interval 7 - 10 days; with anti-sweeping or killing alcohol 1000 times liquid The 30 kg / mu control red spider can be sprayed with 70% methyl thiophanate in gray spot and 60-100 g per acre .
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