Mechanized Insertion Rice Fields Fertilizer Water Management Techniques
Machine inserted rice fertility characteristics:
1, long seedling period. Due to the small seedlings and heavy plant injuries, the seedling emergence period of the machine transplanting seedlings takes about 10 days, which is about 5 days later than the conventional hand transplanting.
2, enough seedling period and early delivery peak. Machine transplanting planting depth due to planting is shallower than that of conventional hand transplanting, broad line shallow planting and thinning facilitates rooting and tillering, strong seedling growth, improper control of seedlings, and is likely to result in oversized groups;
3, need fertilizer characteristics: Under normal circumstances, produce 600kg rice per acre, need to apply urea 26-33kg, general calcium 30-50kg, potash 10-15kg. Machine transplanted rice should be appropriately reduced base fertilizer, increase tiller fertilizer, and divided application, the general base fertilizer accounted for 30-40%, tiller accounted for 60-70%. There are two peak seasons of mechanical fertilizer transplanting, which are the peak of tillering (1 to 2 weeks after planting) and the later period of young panicle differentiation (6 to 7 weeks after planting).
According to the fertility characteristics of machine-transplanted rice, field management should also be different from conventional hand-planting rice. Machine insert rice field fertilizer management technology points are as follows
I. Daejeon Childbirth Management Technology
1, water slurry management. Machine transplanting plant is small, planting injury, long seedling period, the field of water slurry management to "shallow water ground irrigation" principle. After machine transplanting, timely check seedlings to make up for shortages, open a smooth water outlet, maintain the shallow surface layer of the field, promote new root growth, prevent adjacent rows of water, or in case of heavy rain, cause floating seedlings, down seedlings, or submerged crooked and rotten earthworms. 3-4 days after the implementation of shallow water ground irrigation.
When the total number of stalks in the field reached 80% of the estimated number of panicles (approximately 40 days), the water was drained and the fields were allowed to reach the “paddy fields without feet and fields without cracksâ€.
2, chemical weeding. Machine transplanting line spacing, small seedlings, grass damage, should be 5-7 days after the machine inserted rice seedlings live trees, per acre with 50% tossing Ning 50 grams combined with top dressing, uniform measures, and water retention 4-5 days.
3, reasonable top dressing. Machine transplanted seedlings are small, and in order to increase the use of fertilizers, Daejeong Fertilizer should be “a small number of timesâ€. The tiller fertilizer is divided into three applications: the first time, 5-7 days after planting, applying 7-8 kg/mu urea at the same time as the chemical removal; the second time, applying 10 kg/mu urea for about 18 days after planting; About 27 days after planting, 5 kg of urea and 5 kg of potassium fertilizer were applied.
4, pay attention to the prevention and control of rice blast, armyworm, negative mud insects,.
Second, the jointing and booting period management technology
1. Intermittent irrigation shall be conducted after the seedlings are kept in the field to keep the field moist. Proper water protection seedlings during booting, prevent dehydration.
2. After applying the reclaimed water in the dry field, panicle fertilizer should be applied, applying 7-8 kg of urea per acre, 4 kg of potash fertilizer, and promoting large panicles and grains.
3, pay attention to the prevention of bacterial blight, sheath blight, rapae, aphids, rice planthoppers.
Third, grouting period management technology
1. During the grouting period, wet irrigation, dry and wet and wet, beginning of heading, and shallow water irrigation. In order to maintain the vitality of the root system and extend the functional period of the leaves, the grain weight was increased.
2. After heading and after heading, foliar spray 1% urea and 0.2% potassium dihydrogen phosphate mixed solution 1-2 times, both to supplement the fertilizer, but also to avoid love late mature.
3, pay attention to the prevention of rice blast, rice smut disease.
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