Late sowing wheat adjustment cultivation strategy competition high yield
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The number of basic seedlings to be sowed late and late should reach 70% to 80% of the planned number of acres. The sowing amount should be appropriately increased, which can be calculated based on the sowing date and the seed germination rate and the 1000-grain weight to ensure that the basic seedlings per mu reach 300,000 to 350,000. By increasing the main stem into the ear, it compensates for the reduction of tillering and panicle formation.
In the late-to-late struggle to make full use of the limited temperature and light resources in the late autumn and early winter seasons, we can adopt the method of soaking and germination to compete for early seedlings, full seedlings and strong seedlings. Wheat seeds from the sowing to emergence about the effective accumulated temperature of about 100 °C, after soaking germination treatment, you can save the wheat seed in the water absorption, expansion and germination time, 2 to 3 days earlier emergence. Usually soaked with fresh water, suitable temperature germination, sowing before sowing 12 to 24 hours after sowing.
In order to make up for the seedlings, the seedlings will see seedlings harvested three minutes later. If there are good seedlings, there will be good yields, and whether the seedlings can reach a single seedling and improve cultivation and planting quality is the key. In accordance with the requirements of the standardization of agricultural machinery operations, it is necessary to achieve the same level of arable land, flat ground, finely divided ground and loose soil. Adhere to the principle of not dying, don't rot cultivation. Sowing depth of 2.5 cm, after the broadcast suppression, security.
The number of leaves sown with fertilizer supplementation was about 2 less than that of sowing wheat at the appropriate time, and the growth period was shortened. The fertilizer strategy was to adopt the strain strategy of “basal fertilizers, early shoots, early shoots, and multiple spraysâ€. . Basal fertilizer should account for 50% to 60% of the total amount of fertilizer, and the seedlings should be planted in advance in the second leaf stage to ensure a certain amount of growth.
