Only by cultivating pre-winter strong seedlings can we guarantee that the next year's wheat will have large grains, many grains, and high yields.
The standard of pre-winter seedlings for wheat is: before the winter, the main stem grows 7-8 leaves, 7-8 per plant, 8-9 secondary roots, and the average number of mu stems in the wheat field is 1 in the next year. .5-2 times; high yield field 1.2-1.5 times.
To reach the above-mentioned standards for strong seedlings before winter wheat, we must grasp the following management measures: early inspection of seedlings, seedlings, seedlings, seedlings, and wheat seedlings. In order to reduce the gap between the replanted wheat field and the early sowing seedlings, the seedlings may be immersed for one day at a rate of 1 kg of water per 1 kg of seed and replanted after drying for 1-2 hours; if replanting is late, the seeds must The germination can be done so that the seedlings can emerge 2-3 days earlier; if the time is too late, the wheat fields that can no longer be replanted can be combined with thinning seedlings, and the seedlings can be planted for thinning. Transplanting should be planted with large seedlings and strong seedlings. It is advisable to plant the deep leaves without burying the heart. After planting, it should be compacted, watered, and covered with soil. The seedlings and sparse seedlings can ensure that the seedlings are uniform and strong. Therefore, the “seedlings†in the wheat fields that are too large for the group and the common wheat fields should be subject to early seedlings and sparse seedlings. Because of the combination of land, seedlings with Miao and winter fertilizer before winter, land-based, seedling-seeding Miaofei, winter fertilizer, to promote the seedling strong, protect the wheat seedlings safely through the winter, consolidate the previous years of childbirth, has an important role. For dry wheat fields or wheat fields with weak seedlings, early recovery of Miaofei during the three-leaf period requires 15-20 kilograms of standard N-fertilizer. The wheat field with stronger fertility and stronger seedlings can be used between the winter and the snow. Combining Winter Fertilizer with Winter Water, apply 10-15 kg of standard nitrogen fertilizer per acre; for phosphorus- and potassium-depleted land, you can also apply 15-20 kg nitrogen, phosphorus, and potassium ternary compound fertilizer; Spread 2000-3000 kilograms of earth-fertilizer, or 500-600 kilograms of human excrement. However, snow-covered wheat fields and salt fields cannot be used to pour urine; high-yield wheat fields, fertilizers, strong seedlings, and lameness are generally not required for top-dressing in order to prevent overgrowth of groups and subsequent lodging. Look at the lyrics in wheat fields and timely watering pre-winter pre-winter water, which mainly refers to the weak wheat fields or low-lying land that are tillered. When the soil moisture content in winter is higher than 15%, watering is not required; if the soil moisture is dry, the water content is lower than 15%. The following wheat fields will be poured with winter water. The watering time is 6-4 degrees average daily, and it is most suitable in the two months from the beginning of winter to the light snow. Scratching, rolling, earth-cultivation, and protection of cold wheat should be paid attention to before the winter. Scratching can increase soil moisture content in the soil, increase soil temperature, and promote healthy growth of wheat seedlings. After the rain, the topsoil of the soil is "whited out" or "plumped". For a long wheat field, deep stroke 10-12 cm, in order to play a role in restraining the fall. Before winter, it is good to press 1-2 times on wheat fields.
The first is to reduce the evaporation of water, and the deep winter can also prevent cold wind from attacking.
The second is to make the soil tight, strengthen the role of the capillary, increase the surface moisture of the soil, organic rooting, disk pier.
The third is to suppress the growth of wheat. However, soil wet and salty wheat fields cannot be pressed, so as not to cause soil compaction or anti-salt (alkali). The pressure should be selected after 10 o'clock in the morning and before 4 o'clock in the afternoon. The role of wheat in pre-winter soil cultivation is mainly to enhance wheat's ability to resist drought and cold, and it also has the effect of suppressing earthworms, promoting large earthworms, and preventing bacon from lodging. The method is to combine the cultivator and use the hoe to pound the soil into the wheat root. However, the thickness of the rammed earth should be grasped so as not to cover the maggot.
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