1, the concept and indicators of autumn hair: rapeseed is a autumn crop, to the late autumn that has opened the tree, called "fall hair." The morphological indicators are: rape plants have 9-10 green leaves at the end of November, leaf area index 1.5-2, dry weight of 150 kg or more per mu; plant to 12-13 green leaves before wintering (end of December) (Sichuan 13 -14), leaf area index 2.5-3, dry weight per hectare more than 250 kilograms of plants, this type of rape is known as the long type of autumn. After 5 years of 5 years (Sichuan, Hubei, Hunan) control test results, the average yield per mu of autumn rapeseed is 210.8 kilograms, which is 49.0 kilograms higher than the winter hairstyle (9-10 leaves overwinter) per mu, and the yield increase is 30.3%; (7-8 leaves overwinter) 88.1 kilograms of muzicai, an increase of 72.8%. Daejeon grows autumn rapeseed generally more than 200 kilograms per mu. 2. Qiu Fa high-yield technology system: (1) Variety selection. It is necessary to use Gannan-type late-maturing varieties with large yield potential, strong resistance, and high yield and stability. Practice has shown that the "Zhongyou 821" rapeseed developed by the Institute of Oil Crop Research of the Chinese Academy of Agricultural Sciences is the ideal variety for autumn cultivation. The hybrid rapeseed "Qinyou 2" and double low (low mustard, low-flowing) rapeseed "Zhongshuang 2", etc., which are strong in winter, are also suitable varieties for autumn-fat cultivation. (2) Early sowing. Autumn hair cultivation requires early sowing and early planting. According to the experiment, the Zhongyou 821 variety seeds were planted once every 5 days from September 5 to 25. The result was the highest yield on September 5, with a yield of 214.5 kg per mu. Since each delay of 5 days, the yield per mu decreased by 5.6 kg. The general area of ​​the upper and middle reaches of the Yangtze River, such as the Zhongyou 821 breed, will be on September 10th and 10th, and the live broadcast can be postponed accordingly for 10 days. In the above time frame, grab the seeds and solicit for initiative. (3) Strong seedlings were planted early. The cultivation of autumn hair is required to be transplanted in the middle of October in order to fight for higher temperatures in late October and November, so that the rape can grow quickly and grow quickly, and the seedlings can be planted in standard. In the first ten months of transplanting, 4-5 leaves can be planted. Strong seedlings, transplanted in mid-October can be planted with 5-6 leaf strong seedlings, in order to enable rapeseed to early sowing and early planting, we must do a good mouthwash arrangements (4) early fertilizing materials, including re-application of basic fertilizer, early application of Miaofei And fattening. Fertilizer amount according to a large area of ​​150 kg per mu, you need to apply nitrogen 13-14 kg, can be the base fertilizer 50%, Miao Fei 30%, 20% of the fur; phosphorus, potassium 6-7 kg each, boron fertilizer 0.5 kg, one-time base fertilizer, Miaofei should be applied early and should be applied once in late October. The application of moss fertilizer before the Spring Festival, and the shortage of phosphorus, potassium and boron fertilizers, should be supplemented in the first period. (5) Autumn hair cultivation mode. After comprehensive review of the model's optimization and analysis results, the decision-making plan for the comprehensive agronomic measures for the fall cultivation of CNPC 821 is: September 5-10 seedlings, seedling age 29-35 days, density 6800-7000 strains/mu, Mushi nitrogen 17.1 -17.5 kg, P2O5 is 7.2-7.5 kg, more than 220 kg of rapeseed per mu. China Agricultural Network Editor
Pumpkin (scientific name: Cucurbita moschata Duch (Duch. Ex Lam.). The ex Poiret) gourd conan melon belongs to a kind of, annual herb, sprawling stem section department to take root, often stipes stout, wide blade ovate or ovoid, slightly soft qualitative, veins bulge, tendril slightly thick, monoecious, stem stout, rib and groove, owing to the different varieties, often several longitudinal furrow or without outside, most seeds, long ovate or oblong.
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