Chemical control cultivation is an emerging technology in agricultural production. Wheat is controlled and cultivated, which can regulate the growth and development of plants, enhance their resistance to stress, and promote early maturity and high yield.
1. Prevent lodging 1 spray paclobutrazol. During the period of wheat uplift, spraying 30mg of paclobutrazol solution per acre is 30kg, which can make the plant dwarf, increase the lodging resistance, and can cure the wheat powdery mildew and improve the nitrogen absorption and utilization rate of the plant. 2 spray chlormequat. For large and long-growing wheat fields, spraying 0.15%-0.3% chlormequat solution 50kg-75kg in the early stage of jointing can effectively inhibit internode elongation, dwarf the plant, and thick stem base. Hard, thus preventing lodging; if mixed with 2,4-D butyl ester, it can also treat broadleaf weeds in wheat fields. 3 spray to help me. In the jointing stage of wheat, 15 ml to 20 ml per acre, and 50 kg to 60 kg of foliar spray on water, can inhibit internode elongation, prevent late lodging, and increase production by 10% to 20%.
2, enhance drought resistance in the wheat booting stage, using 50 grams of drought-resistant agent per acre, 2.5 kg to 10 kg of water, fully dissolved and then sprayed with ultra-low volume, can reduce the opening angle of the pores on the leaf, improve the plant Water potential, reduce transpiration intensity, enhance root activity, delay leaf senescence, an average yield increase of 16.6%; in water-deficient areas and dry crops, the effect is better.
3, to prevent dry hot air, increase 1000-grain weight
1 Spray ABT rooting powder. In the jointing stage of wheat, foliar application with 5~15ppm ABT4 rooting powder solution can increase the tillering rate, increase the number of ears per mu, enhance the root activity, delay leaf senescence, prevent dry hot air and increase yield by more than 12%. 2 Spray triacontanol. In the wheat heading stage and the flowering stage, spraying with 0.5ppm triacontanol solution can increase the number of grains per ear by 8.1%, increase the weight of 1000 grains by 5.6% to 6.8%, and increase the yield by 10%-20. %. 3 spray oil booster. During the period from wheat flowering to filling, the rice sprayed 1000 times of oil-promoting agent solution 50 kg, which can prevent dry hot air and increase 1000-grain weight, with an average yield increase of 7.8%. 4 spray phenoxyacetic acid. In the grain filling stage of wheat, 25 kg of 60 ppm phenoxyacetic acid solution can also prevent dry hot air and increase 1000-grain weight. 5 spray naphthalene acetic acid. Before the wheat is grouted, 50 kg of 40 ppm naphthalene acetic acid solution can be sprayed per mu, which can increase 1000-grain weight. 6 spray sodium bisulfite. Sodium bisulfite is a photorespiration inhibitor; in the period from the booting of the wheat to the filling stage, 50 g of sodium bisulfite per acre is sprayed with 50 kg of water, and sprayed again every 10 days or so, which can increase the yield by more than 10%.
4. Promote the application of rare earth in early maturity 1. Rare earth is also called rare earth micro-fertilizer or rare earth nitrate. The trade name is Changle Yizhi, which is a new type of rare earth element fertilizer which was firstly promoted and promoted in China. In the period from the jointing to the beginning of the wheat period, the mu spray is 0.08%~0. 1% rare earth solution 50 kg ~ 60 kg, the maturity can be advanced 1 day to 2 days, an increase of 8% to 11%. 2 spraying plant cytokinin. In wheat jointing stage or heading stage, plant cytokinin 50g, water 200kg ~ 300kg, stir well and spray according to the conventional method, can promote the formation of chlorophyll and protein synthesis, enhance photosynthesis and stress resistance It is conducive to early maturity and high yield.
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