In order to ensure high yields and increase corn production this year and ensure the goal of achieving corn production, the members of the expert group of Dongping County, Shandong Province, after thorough discussion, formulated the following high-yielding technical solutions:
First, the basis for formulating plans
In last year's agricultural science and technology home-to-home maize demonstration project, Dongping County focused on the promotion of six main push technologies, which resulted in significant cost savings. The promotion of formula fertilization technology has been generally welcomed by technology demonstration households. In order to solve the problem of high yields of corn, the expert group went deep into some demonstration households to conduct investigations, and set up high-yield trials on small and medium-sized corn plots for individual technology demonstration households, and achieved a major breakthrough in yield. Xizhaoyue, a science and technology demonstration household in the northwestern village of Dayang Township, applied 100 kg of corn formula fertilizer per acre and added 50 kg of urea. The yield per mu reached 1600 kg, which was an increase of 400 kg from the annual output of 1200 kg, which increased the net economic benefits. 190 Yuan, input-output ratio 1:4.8. Tang Hukai, a science and technology demonstration household in Tanglou Village, Xinhu Township, applied 100 kg of corn formula fertilizer per acre. In the big bell mouth, he added 20 kg of urea, an average yield of 1,470 kg per mu, and 270 kg more than the annual output of 1200 kg. , The net increase of economic benefits per mu is 124 yuan, and the input-output ratio is 1:7.2. The test results prove that in order to create a high yield, nitrogen fertilizer must be added.
Second, fertilization technology
(1) Top-dressing amount: According to the above test results and the characteristics of corn growth, combined with the 2006 science and technology homework, it is recommended that the science and technology demonstration households and corn growers should implement corn classification and fertilizer in stages, and appropriately increase the amount of nitrogen fertilizer application. The specific criteria are as follows:
1. Core Demonstration Area and High-yield Research Field: Three top-dressing methods must be adopted. Normally, 3 kg of nitrogen (pure N), 1 kg of phosphorus (P2O5), and 2 kg of potassium (K2O) are required for the production of 100 kg of seeds. Quantity, balance nitrogen, phosphorus, potassium nutrition. First, the use of corn formula fertilizer in a small bell-mouth period of a full application, in the big bell mouth topdressing 25 kilograms of urea; after tassel flowering supplement Shi for grain fertilizers, mu recovery 10 kilograms of urea. The second is not preparing corn formula fertilizer in the small bell-mouth period will be all phosphorus, potassium, zinc fertilizer applied once, chase the total amount of nitrogen fertilizer 40%; in the big bell mouth to recover the total amount of nitrogen fertilizer 50%; after tassel blossom Supplementary application of granulation fertilizer, to recover 10% of the total amount of nitrogen; In order to improve the photosynthetic capacity of the leaves, strengthen the grouting intensity, increase the grain weight, and create a new high.
2. Demonstration households, radiation households of corn: generally adopt the method of top-dressing, first, use corn formula fertilizer all at one time in the small bell-mouth period, in the large bell-mouth period, Mu chase 25 kg of urea. The second is not prepared formula fertilizer in the small bell-mouth period will be all phosphorus, potassium, zinc fertilizer applied once, chase the total amount of nitrogen fertilizer 40%, in the big bell mouth to recover the total amount of nitrogen fertilizer 50-60%; conditional After the tassel bloomed, the grain fertilizer was supplemented and the total amount of nitrogen fertilizer was 10%.
3. Normally Daejeon Maize: Generally adopts the method of top-dressing, and applies all phosphorus, potassium, and zinc fertilizers at one time in the small bell mouth period, chasing 40% of the total amount of nitrogen fertilizer; and chasing 60% of the total amount of nitrogen fertilizer in the big bell mouth. .
(B) top dressing method: to sow or hole as well, topdressing 10-15 cm from the corn plant, top dressing depth of 12-15 cm. It is forbidden to spread or flush with water. Top-dressing, watering as appropriate.
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