It is important for hybrid late rice to have high yields, and it is important to properly cultivate the fields in a timely manner. Sun Tian should master the following points:
First, to the seedlings
The late rice delivery period is shorter and the effective delivery period is shorter. According to the analysis of the seedlings of the double-season hybrid late rice combinations, the late-maturing varieties planted in mid-July, such as "Y Liangyou 1", "Yangliangyou 6", "Zhongzheyou 1" The effective delivery period is mostly from the end of July to the beginning of August; the mid-late and late-maturing varieties planted before the mid-July to the major summer heat, such as “Xinliangyou 6â€, “Yliangyou 7†and “Q You On the 6th, the effective delivery period is mostly on August 3~5; the medium-maturing varieties planted after the big summer heat, such as "Y Liangyou 8", "Y Liangyou 19" and "C Liangyou 1102", The effective delivery period is mostly on August 10; and the early-maturing varieties are planted before August 5th, such as "Tyou 15", "Jinyou 433", and "Zhuliangyou 168", effective tillering period. From August 15 to August 17, once this period arrives, the field should be drained in time.
Second, seedlings to unequal time
The number of seedlings for hybrid late rice in the field, from the perspective of high-yielding cultivation, should be 1.2 times of the effective ear, which is the best time for the field, that is, there are 250,000 to 260,000 seedlings in 667 square meters (1 mu) of late-ripening varieties. When medium-maturing varieties have 230,000 to 240,000 seedlings and early-maturing varieties have 210,000 to 220,000 seedlings, they should immediately drain the water.
Third, light should not be heavy
The late hybrid rice has a positive value during the high temperature period, and rice fields and seedlings have large transpiration. When drying in the fields, it is necessary to grasp the principle of “light should not be heavy†and require more exposure to light. This is because the root system of hybrid late rice is developed, and the root system of super rice is especially developed. The standard for hybrid rice in the field is: "Hard surface hides skin, hand pressure does not stick to mud; Tanaka does not open spade, people leave footprints." At this point you can cover water. If Tiantian can combine the water to see its seedling dynamics, Qiao Shi Zhuang Fei can get twice the result with half the effort and icing on the cake.
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