Suitable time seedlings. The seedlings are important measures to control the density and ensure the seedlings are evenly seedlings. Generally during the three-leaf period seedlings, the principle of the seedlings is between the large and weak, between the inter-individual disease, between the dense interstitial, leaving the stubborn strong seedlings. The five-leaf period is determined according to the planned density. Weeding and weeding. Seedlings with seedlings and seedlings in time for cultivating and weeding can also be chemically weeded. Timely irrigation. According to the water requirement of the crop growth and the water conservancy, the water was sprayed during the buds, flowering stages and clams stage. The requirement is for speeding irrigation to reduce the lodging. Scientific fertilization. The ratio of nitrogen, phosphorus and potassium absorption of rapeseed is generally 1:0.39:0.95. The combined effect of the three elements is that the interaction between the three factors of a certain soil state, water supply, soil, moisture, and fertilizer is exerted under the combined influence of cultivation conditions. effect. 1. Apply base fertilizer, increase organic fertilizer, farmyard fertilizer more than 1000 kg, compound fertilizer 3-5 kg ​​for seed fertilizer, do not advocate urea as a seed fertilizer. 2. Early application of five-leaf fertilizer, seedlings with 20-30 kg of urea per acre or 30-40 kg of ammonium bicarbonate on the water, fertilizer is very important at this time. 3. Skillful application of fertilizer, pay attention to trace fertilizer. Fertilizer should be applied at a height of about 10 cm in combination with irrigation of 15-20 kg of urea per mu. During the flowering stage, boron fertilizer and potassium dihydrogen phosphate were sprayed. Pest and weed control. The emergence of oilseed rape to the convulsing stage is most vulnerable to leaf bee, venom, and cabbage caterpillars. After budding, it is mainly locusts after the green barley. The main diseases are cruciferous clubroot disease, rape rust, downy mildew, viral disease, and sclerotinia. In the seedling stage, 70% thiophanate-methyl wettable powder 1000-1500 times liquid is used to control downy mildew, and the initial flowering period uses 500-1000 times liquid to control sclerotial sclerotia, once every 7 days, successively 2-3 times. Pieris rapae and aphids can be sprayed with 10% imidacloprid wettable powder 1500 times.
PVC
Coated Wiggle Wire will help to ensure that your greenhouse can weather the
elements and last for years. Unlike other attachment methods, Wiggle Wire will
hold up to high winds and harsh environments. Protect your investments by using
the right products. The PVC Coated Wiggle Wire prevents tears for a fast
frustration free installation. This Spring Wire is the superior choice of
Wiggle Wire compared to the non-coated version. The PVC coating prevents tears
and is easier to handle. It is reusable and can easily be installed and removed
by "wiggling" it in and out of the Lock Channel. For use with poly
greenhouse film, curtains, shade cloth and other greenhouse coverings.
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