Since April, wheat has entered the period of nutritional and reproductive growth, which is the period of panicle differentiation. After entering this period, it is the time when wheat needs fertilizer and water, and it is also the period with the most serious damage to powdery mildew, sheath blight, head blight, locusts, wheat spiders, and midge, and it is also the root activity of wheat that begins to decline, that is, yellow roots. Increased, white root reduction, root absorption, and reduced water absorption capacity. Therefore, on the basis of jointing panicle and panicle fertilizer, it should also be in the period of panicle differentiation to booting, that is, in mid-April, the full-peak period of wheat, that is, from the end of April to the beginning of May, and the early stage of grouting after anthesis, that is, in the middle and early May. Divide the wheat mid-to-late fertilizer spray in three batches.
Medicinal fertilizer mixed spray has the following benefits: First, cost savings. Combine the â€œthree agentsâ€ of fungicides, insecticides, and conditioners (or foliar fertilizers) into one spray to reduce the amount of drugs used, and also reduce the number of sprays and reduce labor costs. According to calculations, each acre can Save more than 20 yuan on the cost of medication, fertilizer, and labor spray. The second is to improve control efficiency. The spraying of fungicides, insecticides, and conditioners can increase the concentration of drug fertilizers so that the â€œthree agentsâ€ promote each other and supplement each other, improving the utilization efficiency of drug fertilizers, and preventing disease, pest control, and increasing yield. The early eradication of wheat diseases, pests, premature aging, etc. is in the bud. The third is to increase production and increase efficiency significantly. According to the practice and investigation in recent years, all wheat that has been sprayed three times in the middle and later stages of wheat has thicker stalks, increased flexibility, thicker leaves, thicker greens, thicker grains, more grain, and more stalks. The incidence of pests and diseases is light, generally increasing production by more than 15%, and increasing the benefits of mu by more than 120 yuan.
According to the survey, the bactericides used for the three sprays of wheat are: jinggangmycin, Rhizoma et Radix (combined with jinggangmycin and Fusarium cereus), triadimefon, ethyl allicin, and ene Oxazole, myclobutanil, carbendazim, chlorpheniramine, thiram, etc. and their combinations, the first mainly used the first five to control sheath blight, powdery mildew, rust, etc., the second and third Seven times after the first use, it mainly controls powdery mildew and scab. The main insecticides are cypermethrin, omethoate, cyhalothrin, deltamethrin, fenvalerate, phoxim, chlorpyrifos, acephate, imidacloprid, avermectin, methotrexate, etc. For the pollution-free pesticides such as its compounding agents, high-toxicity and high-residue pesticides such as methamidophos should be strictly prohibited; the regulators (or foliar fertilizers) mainly include: strong rooting and strengthening agents, rooting powder, and re-nitrification for the first time. Sodium phenolate, etc. to promote and enhance root vigor; the second available amino acids, humic acid, fulvic acid, trace elements, etc., to supplement the nutrition and promote leaf photosynthesis; the third available potassium dihydrogen phosphate, cell activator , Active enzyme and other regulators to promote the transport of substances and enhance the vitality of whole wheat, prevent premature aging and so on. In addition, in order to supplement the deficiency of nitrogen nutrition, about 150 grams of urea can be added to each spray.
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